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/*
* Copyright (C) 2012 Intel Corporation. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "config.h"
#include "NetworkStateNotifier.h"
#include "Logging.h"
#include <Ecore.h>
#include <Eeze.h>
#include <Eeze_Net.h>
#include <asm/types.h>
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
// Must come at the end so that sys/socket.h is included first.
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
static const char udevLoopBackInterfaceSysPath[] = "lo";
static const char udevOperstateAttribute[] = "operstate";
static const char udevOperstateUp[] = "up";
static const size_t bufferSize = 4096;
namespace WebCore {
void NetworkStateNotifier::updateState()
{
// Assume that we're offline until proven otherwise.
m_isOnLine = false;
Eina_List* networkInterfaces = eeze_net_list();
Eina_List* list;
void* data;
EINA_LIST_FOREACH(networkInterfaces, list, data) {
Eeze_Net* networkInterface = static_cast<Eeze_Net*>(data);
// Skip Loopback interface.
const char* syspath = eeze_net_syspath_get(networkInterface);
if (!syspath || !strcmp(syspath, udevLoopBackInterfaceSysPath))
continue;
// Skip interfaces that are not up.
const char* state = eeze_net_attribute_get(networkInterface, udevOperstateAttribute);
if (!state || strcmp(state, udevOperstateUp))
continue;
// Check if the interface has an IP address.
eeze_net_scan(networkInterface);
if (eeze_net_addr_get(networkInterface, EEZE_NET_ADDR_TYPE_IP) || eeze_net_addr_get(networkInterface, EEZE_NET_ADDR_TYPE_IP6)) {
m_isOnLine = true;
break;
}
}
EINA_LIST_FREE(networkInterfaces, data)
eeze_net_free(static_cast<Eeze_Net*>(data));
}
void NetworkStateNotifier::networkInterfaceChanged()
{
bool wasOnline = m_isOnLine;
updateState();
if (wasOnline != m_isOnLine && m_networkStateChangedFunction)
m_networkStateChangedFunction();
}
static Eina_Bool readSocketCallback(void* userData, Ecore_Fd_Handler* handler)
{
int sock = ecore_main_fd_handler_fd_get(handler);
char buffer[bufferSize];
ssize_t len;
nlmsghdr* nlh = reinterpret_cast<nlmsghdr*>(buffer);
while ((len = recv(sock, nlh, bufferSize, MSG_DONTWAIT)) > 0) {
while ((NLMSG_OK(nlh, len)) && (nlh->nlmsg_type != NLMSG_DONE)) {
if (nlh->nlmsg_type == NLMSG_ERROR) {
LOG_ERROR("Error while reading socket, stop monitoring onLine state.");
return ECORE_CALLBACK_CANCEL;
}
if (nlh->nlmsg_type == RTM_NEWADDR || nlh->nlmsg_type == RTM_DELADDR) {
// We detected an IP address change, recheck onLine state.
static_cast<NetworkStateNotifier*>(userData)->networkInterfaceChanged();
}
nlh = NLMSG_NEXT(nlh, len);
}
}
return ECORE_CALLBACK_RENEW;
}
NetworkStateNotifier::~NetworkStateNotifier()
{
if (m_fdHandler) {
int sock = ecore_main_fd_handler_fd_get(m_fdHandler);
ecore_main_fd_handler_del(m_fdHandler);
close(sock);
}
eeze_shutdown();
}
NetworkStateNotifier::NetworkStateNotifier()
: m_isOnLine(false)
, m_networkStateChangedFunction(0)
, m_fdHandler(0)
{
if (eeze_init() < 0) {
LOG_ERROR("Failed to initialize eeze library.");
return;
}
updateState();
// Watch for network address changes to keep online state up-to-date.
int sock;
if ((sock = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE)) == -1) {
LOG_ERROR("Couldn't open NETLINK_ROUTE socket.");
return;
}
sockaddr_nl addr;
memset(&addr, 0, sizeof(addr));
addr.nl_family = AF_NETLINK;
addr.nl_groups = RTMGRP_IPV4_IFADDR | RTMGRP_IPV6_IFADDR;
if (bind(sock, reinterpret_cast<sockaddr*>(&addr), sizeof(addr)) == -1) {
LOG_ERROR("Couldn't bind to NETLINK_ROUTE socket.");
return;
}
m_fdHandler = ecore_main_fd_handler_add(sock, ECORE_FD_READ, readSocketCallback, this, 0, 0);
}
} // namespace WebCore
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