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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/base/network_interfaces_fuchsia.h"
#include <fuchsia/net/interfaces/cpp/fidl.h>
#include <zircon/types.h>
#include <string>
#include <utility>
#include "base/logging.h"
#include "net/base/fuchsia/network_interface_cache.h"
#include "net/base/network_change_notifier.h"
#include "net/base/network_change_notifier_fuchsia.h"
#include "net/base/network_interfaces.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
namespace net {
namespace internal {
namespace {
IPAddress FuchsiaIpAddressToIPAddress(const fuchsia::net::IpAddress& address) {
switch (address.Which()) {
case fuchsia::net::IpAddress::kIpv4:
return IPAddress(address.ipv4().addr.data(), address.ipv4().addr.size());
case fuchsia::net::IpAddress::kIpv6:
return IPAddress(address.ipv6().addr.data(), address.ipv6().addr.size());
default:
return IPAddress();
}
}
} // namespace
// static
absl::optional<InterfaceProperties> InterfaceProperties::VerifyAndCreate(
fuchsia::net::interfaces::Properties properties) {
if (!internal::VerifyCompleteInterfaceProperties(properties))
return absl::nullopt;
return absl::make_optional(InterfaceProperties(std::move(properties)));
}
InterfaceProperties::InterfaceProperties(
fuchsia::net::interfaces::Properties properties)
: properties_(std::move(properties)) {}
InterfaceProperties::InterfaceProperties(InterfaceProperties&& interface) =
default;
InterfaceProperties& InterfaceProperties::operator=(
InterfaceProperties&& interface) = default;
InterfaceProperties::~InterfaceProperties() = default;
bool InterfaceProperties::Update(
fuchsia::net::interfaces::Properties properties) {
if (!properties.has_id() || properties_.id() != properties.id()) {
LOG(ERROR) << "Update failed: invalid properties.";
return false;
}
if (properties.has_addresses()) {
for (const auto& fidl_address : properties.addresses()) {
if (!fidl_address.has_addr()) {
LOG(ERROR) << "Update failed: invalid properties.";
return false;
}
}
properties_.set_addresses(std::move(*properties.mutable_addresses()));
}
if (properties.has_online())
properties_.set_online(properties.online());
if (properties.has_has_default_ipv4_route())
properties_.set_has_default_ipv4_route(properties.has_default_ipv4_route());
if (properties.has_has_default_ipv6_route())
properties_.set_has_default_ipv6_route(properties.has_default_ipv6_route());
return true;
}
void InterfaceProperties::AppendNetworkInterfaces(
NetworkInterfaceList* interfaces) const {
for (const auto& fidl_address : properties_.addresses()) {
IPAddress address = FuchsiaIpAddressToIPAddress(fidl_address.addr().addr);
if (address.empty()) {
LOG(WARNING) << "Unknown fuchsia.net/IpAddress variant "
<< fidl_address.addr().addr.Which();
continue;
}
const int kAttributes = 0;
interfaces->emplace_back(
properties_.name(), properties_.name(), properties_.id(),
internal::ConvertConnectionType(properties_.device_class()),
std::move(address), fidl_address.addr().prefix_len, kAttributes);
}
}
bool InterfaceProperties::IsPubliclyRoutable() const {
if (!properties_.online())
return false;
for (const auto& fidl_address : properties_.addresses()) {
const IPAddress address =
FuchsiaIpAddressToIPAddress(fidl_address.addr().addr);
if ((address.IsIPv4() && properties_.has_default_ipv4_route() &&
!address.IsLinkLocal()) ||
(address.IsIPv6() && properties_.has_default_ipv6_route() &&
address.IsPubliclyRoutable())) {
return true;
}
}
return false;
}
NetworkChangeNotifier::ConnectionType ConvertConnectionType(
const fuchsia::net::interfaces::DeviceClass& device_class) {
switch (device_class.Which()) {
case fuchsia::net::interfaces::DeviceClass::kLoopback:
return NetworkChangeNotifier::CONNECTION_NONE;
case fuchsia::net::interfaces::DeviceClass::kDevice:
switch (device_class.device()) {
case fuchsia::hardware::network::DeviceClass::WLAN:
return NetworkChangeNotifier::CONNECTION_WIFI;
case fuchsia::hardware::network::DeviceClass::ETHERNET:
return NetworkChangeNotifier::CONNECTION_ETHERNET;
default:
return NetworkChangeNotifier::CONNECTION_UNKNOWN;
}
default:
LOG(WARNING) << "Received unknown fuchsia.net.interfaces/DeviceClass "
<< device_class.Which();
return NetworkChangeNotifier::CONNECTION_UNKNOWN;
}
}
bool VerifyCompleteInterfaceProperties(
const fuchsia::net::interfaces::Properties& properties) {
if (!properties.has_id())
return false;
if (!properties.has_addresses())
return false;
for (const auto& fidl_address : properties.addresses()) {
if (!fidl_address.has_addr())
return false;
}
if (!properties.has_online())
return false;
if (!properties.has_device_class())
return false;
if (!properties.has_has_default_ipv4_route())
return false;
if (!properties.has_has_default_ipv6_route())
return false;
if (!properties.has_name()) {
return false;
}
return true;
}
} // namespace internal
bool GetNetworkList(NetworkInterfaceList* networks, int policy) {
DCHECK(networks);
const internal::NetworkInterfaceCache* cache_ptr =
NetworkChangeNotifier::GetNetworkInterfaceCache();
if (cache_ptr) {
return cache_ptr->GetOnlineInterfaces(networks);
}
fuchsia::net::interfaces::WatcherHandle watcher_handle =
internal::ConnectInterfacesWatcher();
std::vector<fuchsia::net::interfaces::Properties> interfaces;
auto handle_or_status = internal::ReadExistingNetworkInterfacesFromNewWatcher(
std::move(watcher_handle), interfaces);
if (!handle_or_status.has_value()) {
return false;
}
internal::NetworkInterfaceCache temp_cache(/*require_wlan=*/false);
auto change_bits = temp_cache.AddInterfaces(std::move(interfaces));
if (!change_bits.has_value()) {
return false;
}
return temp_cache.GetOnlineInterfaces(networks);
}
std::string GetWifiSSID() {
NOTIMPLEMENTED();
return std::string();
}
} // namespace net
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