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device.cc
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// Copyright 2018 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "shill/device.h"
#include <errno.h>
#include <netinet/in.h>
#include <linux/if.h> // NOLINT - Needs definitions from netinet/in.h
#include <stdio.h>
#include <string.h>
#include <sys/param.h>
#include <time.h>
#include <unistd.h>
#include <algorithm>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include <base/bind.h>
#include <base/files/file_util.h>
#include <base/memory/ref_counted.h>
#include <base/stl_util.h>
#include <base/strings/string_number_conversions.h>
#include <base/strings/string_util.h>
#include <base/strings/stringprintf.h>
#include <chromeos/dbus/service_constants.h>
#include "shill/connection.h"
#include "shill/control_interface.h"
#include "shill/dhcp/dhcp_config.h"
#include "shill/dhcp/dhcp_properties.h"
#include "shill/dhcp/dhcp_provider.h"
#include "shill/error.h"
#include "shill/event_dispatcher.h"
#include "shill/icmp.h"
#include "shill/ip_address_store.h"
#include "shill/link_monitor.h"
#include "shill/logging.h"
#include "shill/manager.h"
#include "shill/metrics.h"
#include "shill/net/ip_address.h"
#include "shill/net/ndisc.h"
#include "shill/net/rtnl_handler.h"
#include "shill/property_accessor.h"
#include "shill/refptr_types.h"
#include "shill/routing_table.h"
#include "shill/routing_table_entry.h"
#include "shill/service.h"
#include "shill/socket_info_reader.h"
#include "shill/store_interface.h"
#include "shill/technology.h"
#include "shill/tethering.h"
#include "shill/traffic_monitor.h"
using base::Bind;
using base::BindOnce;
using base::Callback;
using base::FilePath;
using base::StringPrintf;
using std::set;
using std::string;
using std::vector;
namespace shill {
namespace Logging {
static auto kModuleLogScope = ScopeLogger::kDevice;
static string ObjectID(const Device* d) {
return d->GetRpcIdentifier().value();
}
} // namespace Logging
namespace {
constexpr char kIPFlagTemplate[] = "/proc/sys/net/%s/conf/%s/%s";
constexpr char kIPFlagVersion4[] = "ipv4";
constexpr char kIPFlagVersion6[] = "ipv6";
constexpr char kIPFlagUseTempAddr[] = "use_tempaddr";
constexpr char kIPFlagUseTempAddrUsedAndDefault[] = "2";
constexpr char kIPFlagAcceptRouterAdvertisementsAlways[] = "2";
constexpr char kIPFlagReversePathFilter[] = "rp_filter";
constexpr char kIPFlagReversePathFilterEnabled[] = "1";
constexpr char kIPFlagReversePathFilterLooseMode[] = "2";
constexpr char kIPFlagArpAnnounce[] = "arp_announce";
constexpr char kIPFlagArpAnnounceDefault[] = "0";
constexpr char kIPFlagArpAnnounceBestLocal[] = "2";
constexpr char kIPFlagArpIgnore[] = "arp_ignore";
constexpr char kIPFlagArpIgnoreDefault[] = "0";
constexpr char kIPFlagArpIgnoreLocalOnly[] = "1";
const char* const kFallbackDnsServers[] = {"8.8.8.8", "8.8.4.4"};
constexpr size_t kHardwareAddressLength = 6;
// Maximum seconds between two link monitor failures to declare this link
// (network) as unreliable.
constexpr int kLinkUnreliableThresholdSeconds = 60 * 60;
Service::ConnectState CalculatePortalStateFromProbeResults(
const PortalDetector::Result& http_result,
const PortalDetector::Result& https_result) {
if (http_result.phase != PortalDetector::Phase::kContent) {
return Service::kStateNoConnectivity;
}
if (http_result.status == PortalDetector::Status::kSuccess &&
https_result.status == PortalDetector::Status::kSuccess) {
return Service::kStateOnline;
}
if (http_result.status == PortalDetector::Status::kRedirect) {
return http_result.redirect_url_string.empty()
? Service::kStatePortalSuspected
: Service::kStateRedirectFound;
}
if (http_result.status == PortalDetector::Status::kTimeout &&
https_result.status != PortalDetector::Status::kSuccess) {
return Service::kStateNoConnectivity;
}
return Service::kStatePortalSuspected;
}
bool IsTimevalZero(const struct timeval& t) {
return t.tv_sec == 0 && t.tv_usec == 0;
}
} // namespace
const char Device::kIPFlagDisableIPv6[] = "disable_ipv6";
const char Device::kIPFlagAcceptRouterAdvertisements[] = "accept_ra";
const char Device::kStoragePowered[] = "Powered";
const char Device::kStorageReceiveByteCount[] = "ReceiveByteCount";
const char Device::kStorageTransmitByteCount[] = "TransmitByteCount";
Device::Device(Manager* manager,
const string& link_name,
const string& mac_address,
int interface_index,
Technology technology)
: enabled_(false),
enabled_persistent_(true),
enabled_pending_(enabled_),
mac_address_(base::ToLowerASCII(mac_address)),
interface_index_(interface_index),
running_(false),
link_name_(link_name),
manager_(manager),
adaptor_(manager->control_interface()->CreateDeviceAdaptor(this)),
technology_(technology),
portal_check_interval_seconds_(0),
receive_byte_offset_(0),
transmit_byte_offset_(0),
dhcp_provider_(DHCPProvider::GetInstance()),
routing_table_(RoutingTable::GetInstance()),
rtnl_handler_(RTNLHandler::GetInstance()),
time_(Time::GetInstance()),
last_link_monitor_failed_time_(0),
arp_link_monitor_failed_time_{},
neighbor_link_monitor_failed_time_{},
link_monitor_comparison_reported_(false),
ipv6_disabled_(false),
is_loose_routing_(false),
is_multi_homed_(false),
fixed_ip_params_(false),
traffic_counter_callback_id_(0),
weak_ptr_factory_(this) {
store_.RegisterConstString(kAddressProperty, &mac_address_);
// kBgscanMethodProperty: Registered in WiFi
// kBgscanShortIntervalProperty: Registered in WiFi
// kBgscanSignalThresholdProperty: Registered in WiFi
// kCellularAllowRoamingProperty: Registered in Cellular
// kCarrierProperty: Registered in Cellular
// kEsnProperty: Registered in Cellular
// kHomeProviderProperty: Registered in Cellular
// kImeiProperty: Registered in Cellular
// kIccidProperty: Registered in Cellular
// kImsiProperty: Registered in Cellular
// kInhibit: Registered in Cellular
// kManufacturerProperty: Registered in Cellular
// kMdnProperty: Registered in Cellular
// kMeidProperty: Registered in Cellular
// kMinProperty: Registered in Cellular
// kModelIdProperty: Registered in Cellular
// kFirmwareRevisionProperty: Registered in Cellular
// kHardwareRevisionProperty: Registered in Cellular
// kDeviceIdProperty: Registered in Cellular
// kSIMLockStatusProperty: Registered in Cellular
// kFoundNetworksProperty: Registered in Cellular
// kDBusObjectProperty: Register in Cellular
// kUseAttachAPNProperty: Registered in Cellular
store_.RegisterConstString(kInterfaceProperty, &link_name_);
HelpRegisterDerivedBool(kIPv6DisabledProperty, &Device::GetIPv6Disabled,
&Device::SetIPv6Disabled, &Device::ClearIPv6Disabled);
HelpRegisterConstDerivedRpcIdentifier(
kSelectedServiceProperty, &Device::GetSelectedServiceRpcIdentifier);
HelpRegisterConstDerivedRpcIdentifiers(kIPConfigsProperty,
&Device::AvailableIPConfigs);
store_.RegisterConstString(kNameProperty, &link_name_);
store_.RegisterConstBool(kPoweredProperty, &enabled_);
HelpRegisterConstDerivedString(kTypeProperty, &Device::GetTechnologyString);
HelpRegisterConstDerivedUint64(kLinkMonitorResponseTimeProperty,
&Device::GetLinkMonitorResponseTime);
// kScanningProperty: Registered in WiFi, Cellular
// kScanIntervalProperty: Registered in WiFi, Cellular
// kWakeOnWiFiFeaturesEnabledProperty: Registered in WiFi
if (manager_ && manager_->device_info()) { // Unit tests may not have these.
manager_->device_info()->GetByteCounts(
interface_index_, &receive_byte_offset_, &transmit_byte_offset_);
HelpRegisterConstDerivedUint64(kReceiveByteCountProperty,
&Device::GetReceiveByteCountProperty);
HelpRegisterConstDerivedUint64(kTransmitByteCountProperty,
&Device::GetTransmitByteCountProperty);
}
SLOG(this, 1) << "Device(): " << link_name_ << " index: " << interface_index_;
}
Device::~Device() {
SLOG(this, 1) << "~Device(): " << link_name_
<< " index: " << interface_index_;
}
void Device::Initialize() {
SLOG(this, 2) << "Initialized";
DisableArpFiltering();
EnableReversePathFilter();
}
void Device::LinkEvent(unsigned flags, unsigned change) {
SLOG(this, 2) << base::StringPrintf("Device %s flags 0x%x changed 0x%x",
link_name_.c_str(), flags, change);
}
void Device::Scan(Error* error, const string& reason) {
SLOG(this, 2) << __func__ << " [Device] on " << link_name() << " from "
<< reason;
Error::PopulateAndLog(FROM_HERE, error, Error::kNotSupported,
"Device doesn't support scan.");
}
void Device::RegisterOnNetwork(const std::string& /*network_id*/,
Error* error,
const ResultCallback& /*callback*/) {
Error::PopulateAndLog(FROM_HERE, error, Error::kNotSupported,
"Device doesn't support network registration.");
}
void Device::RequirePin(const string& /*pin*/,
bool /*require*/,
Error* error,
const ResultCallback& /*callback*/) {
SLOG(this, 2) << __func__;
Error::PopulateAndLog(FROM_HERE, error, Error::kNotSupported,
"Device doesn't support RequirePin.");
}
void Device::EnterPin(const string& /*pin*/,
Error* error,
const ResultCallback& /*callback*/) {
SLOG(this, 2) << __func__;
Error::PopulateAndLog(FROM_HERE, error, Error::kNotSupported,
"Device doesn't support EnterPin.");
}
void Device::UnblockPin(const string& /*unblock_code*/,
const string& /*pin*/,
Error* error,
const ResultCallback& /*callback*/) {
SLOG(this, 2) << __func__;
Error::PopulateAndLog(FROM_HERE, error, Error::kNotSupported,
"Device doesn't support UnblockPin.");
}
void Device::ChangePin(const string& /*old_pin*/,
const string& /*new_pin*/,
Error* error,
const ResultCallback& /*callback*/) {
SLOG(this, 2) << __func__;
Error::PopulateAndLog(FROM_HERE, error, Error::kNotSupported,
"Device doesn't support ChangePin.");
}
void Device::Reset(Error* error, const ResultCallback& /*callback*/) {
SLOG(this, 2) << __func__;
Error::PopulateAndLog(FROM_HERE, error, Error::kNotSupported,
"Device doesn't support Reset.");
}
void Device::RefreshIPConfig(Error* /*error*/) {
SLOG(this, 2) << __func__;
if (ipconfig_) {
ipconfig_->Refresh();
}
}
bool Device::GetIPv6Disabled(Error* error) {
return ipv6_disabled_;
}
bool Device::SetIPv6Disabled(const bool& disabling, Error* /*error*/) {
if (disabling == ipv6_disabled_)
return false;
ipv6_disabled_ = disabling;
if (ipv6_disabled_) {
StopIPv6();
} else {
StartIPv6();
}
return true;
}
void Device::ClearIPv6Disabled(Error* error) {
SetIPv6Disabled(IsIPv6DisabledByDefault(), error);
}
bool Device::IsIPv6DisabledByDefault() const {
return false;
}
void Device::StopIPv6() {
SLOG(this, 2) << __func__;
SetIPFlag(IPAddress::kFamilyIPv6, kIPFlagDisableIPv6, "1");
}
void Device::StartIPv6() {
SLOG(this, 2) << __func__;
if (ipv6_disabled_) {
LOG(INFO) << "Skip enabling IPv6 on " << link_name_
<< " as it is disabled.";
return;
}
SetIPFlag(IPAddress::kFamilyIPv6, kIPFlagDisableIPv6, "0");
// Force the kernel to accept RAs even when global IPv6 forwarding is
// enabled. Unfortunately this needs to be set on a per-interface basis.
SetIPFlag(IPAddress::kFamilyIPv6, kIPFlagAcceptRouterAdvertisements,
kIPFlagAcceptRouterAdvertisementsAlways);
}
void Device::EnableIPv6Privacy() {
SetIPFlag(IPAddress::kFamilyIPv6, kIPFlagUseTempAddr,
kIPFlagUseTempAddrUsedAndDefault);
}
void Device::SetLooseRouting(bool is_loose_routing) {
if (is_loose_routing == is_loose_routing_) {
return;
}
is_loose_routing_ = is_loose_routing;
if (is_multi_homed_) {
// Nothing to do: loose routing is already enabled, and should remain so.
return;
}
if (is_loose_routing) {
DisableReversePathFilter();
} else {
EnableReversePathFilter();
}
}
void Device::DisableReversePathFilter() {
// TODO(pstew): Current kernel doesn't offer reverse-path filtering flag
// for IPv6. crbug.com/207193
SetIPFlag(IPAddress::kFamilyIPv4, kIPFlagReversePathFilter,
kIPFlagReversePathFilterLooseMode);
}
void Device::EnableReversePathFilter() {
SetIPFlag(IPAddress::kFamilyIPv4, kIPFlagReversePathFilter,
kIPFlagReversePathFilterEnabled);
// Clear any cached routes that might have accumulated while reverse-path
// filtering was disabled.
routing_table_->FlushCache();
}
void Device::SetIsMultiHomed(bool is_multi_homed) {
if (is_multi_homed == is_multi_homed_) {
return;
}
LOG(INFO) << "Device " << link_name() << " multi-home state is now "
<< is_multi_homed;
is_multi_homed_ = is_multi_homed;
if (is_multi_homed) {
EnableArpFiltering();
if (!is_loose_routing_) {
DisableReversePathFilter();
}
} else {
DisableArpFiltering();
if (!is_loose_routing_) {
EnableReversePathFilter();
}
}
}
void Device::SetFixedIpParams(bool fixed_ip_params) {
fixed_ip_params_ = fixed_ip_params;
}
void Device::DisableArpFiltering() {
SetIPFlag(IPAddress::kFamilyIPv4, kIPFlagArpAnnounce,
kIPFlagArpAnnounceDefault);
SetIPFlag(IPAddress::kFamilyIPv4, kIPFlagArpIgnore, kIPFlagArpIgnoreDefault);
}
void Device::EnableArpFiltering() {
SetIPFlag(IPAddress::kFamilyIPv4, kIPFlagArpAnnounce,
kIPFlagArpAnnounceBestLocal);
SetIPFlag(IPAddress::kFamilyIPv4, kIPFlagArpIgnore,
kIPFlagArpIgnoreLocalOnly);
}
bool Device::IsConnected() const {
if (selected_service_)
return selected_service_->IsConnected();
return false;
}
bool Device::IsConnectedToService(const ServiceRefPtr& service) const {
return service == selected_service_ && IsConnected();
}
bool Device::IsConnectedViaTether() const {
if (!ipconfig_)
return false;
ByteArray vendor_encapsulated_options =
ipconfig_->properties().vendor_encapsulated_options;
size_t android_vendor_encapsulated_options_len =
strlen(Tethering::kAndroidVendorEncapsulatedOptions);
return (vendor_encapsulated_options.size() ==
android_vendor_encapsulated_options_len) &&
!memcmp(&vendor_encapsulated_options[0],
Tethering::kAndroidVendorEncapsulatedOptions,
vendor_encapsulated_options.size());
}
const RpcIdentifier& Device::GetRpcIdentifier() const {
return adaptor_->GetRpcIdentifier();
}
string Device::GetStorageIdentifier() const {
return "device_" + mac_address_;
}
vector<GeolocationInfo> Device::GetGeolocationObjects() const {
return vector<GeolocationInfo>();
}
string Device::GetTechnologyString(Error* /*error*/) {
return technology().GetName();
}
const string& Device::UniqueName() const {
return link_name_;
}
bool Device::Load(const StoreInterface* storage) {
const string id = GetStorageIdentifier();
if (!storage->ContainsGroup(id)) {
SLOG(this, 2) << "Device is not available in the persistent store: " << id;
return false;
}
enabled_persistent_ = true;
storage->GetBool(id, kStoragePowered, &enabled_persistent_);
uint64_t rx_byte_count = 0, tx_byte_count = 0;
manager_->device_info()->GetByteCounts(interface_index_, &rx_byte_count,
&tx_byte_count);
// If there is a byte-count present in the profile, the return value
// of Device::Get*ByteCount() should be the this stored value plus
// whatever additional bytes we receive since time-of-load. We
// accomplish this by the subtractions below, which can validly
// roll over "negative" in the subtractions below and in Get*ByteCount.
uint64_t profile_byte_count;
if (storage->GetUint64(id, kStorageReceiveByteCount, &profile_byte_count)) {
receive_byte_offset_ = rx_byte_count - profile_byte_count;
}
if (storage->GetUint64(id, kStorageTransmitByteCount, &profile_byte_count)) {
transmit_byte_offset_ = tx_byte_count - profile_byte_count;
}
return true;
}
bool Device::Save(StoreInterface* storage) {
const string id = GetStorageIdentifier();
storage->SetBool(id, kStoragePowered, enabled_persistent_);
storage->SetUint64(id, kStorageReceiveByteCount, GetReceiveByteCount());
storage->SetUint64(id, kStorageTransmitByteCount, GetTransmitByteCount());
return true;
}
void Device::OnBeforeSuspend(const ResultCallback& callback) {
// Nothing to be done in the general case, so immediately report success.
callback.Run(Error(Error::kSuccess));
}
void Device::OnAfterResume() {
RenewDHCPLease(false, nullptr);
if (link_monitor_) {
SLOG(this, 3) << "Informing Link Monitor of resume.";
link_monitor_->OnAfterResume();
}
// Resume from sleep, could be in different location now.
// Ignore previous link monitor failures.
if (selected_service_) {
selected_service_->set_unreliable(false);
reliable_link_callback_.Cancel();
}
last_link_monitor_failed_time_ = 0;
}
void Device::OnDarkResume(const ResultCallback& callback) {
// Nothing to be done in the general case, so immediately report success.
callback.Run(Error(Error::kSuccess));
}
void Device::DropConnection() {
SLOG(this, 2) << __func__;
DestroyIPConfig();
SelectService(nullptr);
}
void Device::ResetConnection() {
SLOG(this, 2) << __func__;
DestroyIPConfig();
if (!selected_service_) {
return;
}
// Refresh traffic counters before deselecting the service.
FetchTrafficCounters(selected_service_, /*new_service=*/nullptr);
selected_service_->set_unreliable(false);
reliable_link_callback_.Cancel();
selected_service_ = nullptr;
adaptor_->EmitRpcIdentifierChanged(kSelectedServiceProperty,
GetSelectedServiceRpcIdentifier(nullptr));
}
void Device::DestroyIPConfig() {
StopIPv6();
bool ipconfig_changed = false;
if (ipconfig_) {
ipconfig_->ReleaseIP(IPConfig::kReleaseReasonDisconnect);
ipconfig_ = nullptr;
ipconfig_changed = true;
}
if (ip6config_) {
StopIPv6DNSServerTimer();
ip6config_ = nullptr;
ipconfig_changed = true;
}
if (dhcpv6_config_) {
dhcpv6_config_->ReleaseIP(IPConfig::kReleaseReasonDisconnect);
dhcpv6_config_ = nullptr;
ipconfig_changed = true;
}
// Emit updated IP configs if there are any changes.
if (ipconfig_changed) {
UpdateIPConfigsProperty();
}
DestroyConnection();
}
void Device::OnIPv6AddressChanged(const IPAddress* address) {
if (!address) {
if (ip6config_) {
ip6config_ = nullptr;
UpdateIPConfigsProperty();
}
return;
}
CHECK_EQ(address->family(), IPAddress::kFamilyIPv6);
IPConfig::Properties properties;
if (!address->IntoString(&properties.address)) {
LOG(ERROR) << "Unable to convert IPv6 address into a string";
return;
}
properties.subnet_prefix = address->prefix();
RoutingTableEntry default_route;
if (routing_table_->GetDefaultRoute(interface_index_, IPAddress::kFamilyIPv6,
&default_route)) {
if (!default_route.gateway.IntoString(&properties.gateway)) {
LOG(ERROR) << "Unable to convert IPv6 gateway into a string";
return;
}
} else {
// The kernel normally populates the default route before it performs
// a neighbor solicitation for the new address, so it shouldn't be
// missing at this point.
LOG(WARNING) << "No default route for global IPv6 address "
<< properties.address;
}
if (!ip6config_) {
ip6config_ = new IPConfig(control_interface(), link_name_);
} else if (properties.address == ip6config_->properties().address &&
properties.subnet_prefix ==
ip6config_->properties().subnet_prefix) {
SLOG(this, 2) << __func__ << " primary address for " << link_name_
<< " is unchanged";
return;
}
properties.address_family = IPAddress::kFamilyIPv6;
properties.method = kTypeIPv6;
// It is possible for device to receive DNS server notification before IP
// address notification, so preserve the saved DNS server if it exist.
properties.dns_servers = ip6config_->properties().dns_servers;
PrependDNSServers(IPAddress::kFamilyIPv6, &properties.dns_servers);
ip6config_->set_properties(properties);
UpdateIPConfigsProperty();
OnIPv6ConfigUpdated();
}
void Device::OnIPv6DnsServerAddressesChanged() {
vector<IPAddress> server_addresses;
uint32_t lifetime = 0;
// Stop any existing timer.
StopIPv6DNSServerTimer();
if (!manager_->device_info()->GetIPv6DnsServerAddresses(
interface_index_, &server_addresses, &lifetime) ||
lifetime == 0) {
IPv6DNSServerExpired();
return;
}
vector<string> addresses_str;
for (const auto& ip : server_addresses) {
string address_str;
if (!ip.IntoString(&address_str)) {
LOG(ERROR) << "Unable to convert IPv6 address into a string!";
IPv6DNSServerExpired();
return;
}
addresses_str.push_back(address_str);
}
if (!ip6config_) {
ip6config_ = new IPConfig(control_interface(), link_name_);
}
if (lifetime != ND_OPT_LIFETIME_INFINITY) {
// Setup timer to monitor DNS server lifetime if not infinite lifetime.
StartIPv6DNSServerTimer(lifetime);
}
PrependDNSServers(IPAddress::kFamilyIPv6, &addresses_str);
// Done if no change in server addresses.
if (ip6config_->properties().dns_servers == addresses_str) {
SLOG(this, 2) << __func__ << " IPv6 DNS server list for " << link_name_
<< " is unchanged.";
return;
}
ip6config_->UpdateDNSServers(std::move(addresses_str));
UpdateIPConfigsProperty();
OnIPv6ConfigUpdated();
}
void Device::StartIPv6DNSServerTimer(uint32_t lifetime_seconds) {
int64_t delay = static_cast<int64_t>(lifetime_seconds) * 1000;
ipv6_dns_server_expired_callback_.Reset(
base::Bind(&Device::IPv6DNSServerExpired, base::Unretained(this)));
dispatcher()->PostDelayedTask(
FROM_HERE, ipv6_dns_server_expired_callback_.callback(), delay);
}
void Device::StopIPv6DNSServerTimer() {
ipv6_dns_server_expired_callback_.Cancel();
}
void Device::IPv6DNSServerExpired() {
if (!ip6config_) {
return;
}
ip6config_->UpdateDNSServers(vector<string>());
UpdateIPConfigsProperty();
}
void Device::StopAllActivities() {
StopTrafficMonitor();
StopPortalDetection();
StopConnectivityTest();
StopConnectionDiagnostics();
StopLinkMonitor();
StopDNSTest();
StopIPv6DNSServerTimer();
}
void Device::AddWakeOnPacketConnection(const string& ip_endpoint,
Error* error) {
Error::PopulateAndLog(
FROM_HERE, error, Error::kNotSupported,
"AddWakeOnPacketConnection not implemented for " + link_name_ + ".");
return;
}
void Device::AddWakeOnPacketOfTypes(
const std::vector<std::string>& packet_types, Error* error) {
Error::PopulateAndLog(
FROM_HERE, error, Error::kNotSupported,
"AddWakeOnPacketOfType not implemented for " + link_name_ + ".");
return;
}
void Device::RemoveWakeOnPacketConnection(const string& ip_endpoint,
Error* error) {
Error::PopulateAndLog(
FROM_HERE, error, Error::kNotSupported,
"RemoveWakeOnPacketConnection not implemented for " + link_name_ + ".");
return;
}
void Device::RemoveWakeOnPacketOfTypes(
const std::vector<std::string>& packet_types, Error* error) {
Error::PopulateAndLog(
FROM_HERE, error, Error::kNotSupported,
"RemoveWakeOnPacketOfType not implemented for " + link_name_ + ".");
return;
}
void Device::RemoveAllWakeOnPacketConnections(Error* error) {
Error::PopulateAndLog(
FROM_HERE, error, Error::kNotSupported,
"RemoveAllWakeOnPacketConnections not implemented for " + link_name_ +
".");
return;
}
void Device::SetUsbEthernetMacAddressSource(const std::string& source,
Error* error,
const ResultCallback& callback) {
Error::PopulateAndLog(
FROM_HERE, error, Error::kNotSupported,
"SetUsbEthernetMacAddressSource not implemented for " + link_name_ + ".");
return;
}
void Device::RenewDHCPLease(bool from_dbus, Error* /*error*/) {
LOG(INFO) << __func__;
if (ipconfig_) {
SLOG(this, 3) << "Renewing IPv4 Address";
ipconfig_->RenewIP();
}
if (ip6config_ && !from_dbus) {
SLOG(this, 3) << "Waiting for new IPv6 configuration";
// Invalidate the old IPv6 configuration, will receive notifications
// from kernel for new IPv6 configuration if there is one.
StopIPv6DNSServerTimer();
ip6config_ = nullptr;
UpdateIPConfigsProperty();
}
if (dhcpv6_config_) {
SLOG(this, 3) << "Renewing DHCPv6 lease";
dhcpv6_config_->RenewIP();
}
}
bool Device::ShouldUseArpGateway() const {
return false;
}
bool Device::IsUsingStaticIP() const {
if (!selected_service_) {
return false;
}
return selected_service_->HasStaticIPAddress();
}
bool Device::IsUsingStaticNameServers() const {
if (!selected_service_) {
return false;
}
return selected_service_->HasStaticNameServers();
}
bool Device::HasDirectConnectivityTo(const IPAddress& address) const {
for (const auto& device_address :
manager()->device_info()->GetAddresses(interface_index())) {
if (device_address.family() == address.family() &&
device_address.CanReachAddress(address)) {
return true;
}
}
return false;
}
bool Device::AcquireIPConfig() {
return AcquireIPConfigWithLeaseName(string());
}
bool Device::AcquireIPConfigWithLeaseName(const string& lease_name) {
DestroyIPConfig();
StartIPv6();
bool arp_gateway = manager_->GetArpGateway() && ShouldUseArpGateway();
DhcpProperties dhcp_properties =
selected_service_
? DhcpProperties::Combine(manager_->dhcp_properties(),
selected_service_->dhcp_properties())
: manager_->dhcp_properties();
DHCPConfigRefPtr dhcp_config = dhcp_provider_->CreateIPv4Config(
link_name_, lease_name, arp_gateway, dhcp_properties);
const int minimum_mtu = manager()->GetMinimumMTU();
if (minimum_mtu != IPConfig::kUndefinedMTU) {
dhcp_config->set_minimum_mtu(minimum_mtu);
}
ipconfig_ = dhcp_config;
ipconfig_->RegisterUpdateCallback(
Bind(&Device::OnIPConfigUpdated, AsWeakPtr()));
ipconfig_->RegisterFailureCallback(
Bind(&Device::OnIPConfigFailed, AsWeakPtr()));
ipconfig_->RegisterRefreshCallback(
Bind(&Device::OnIPConfigRefreshed, AsWeakPtr()));
ipconfig_->RegisterExpireCallback(
Bind(&Device::OnIPConfigExpired, AsWeakPtr()));
dispatcher()->PostTask(FROM_HERE,
Bind(&Device::ConfigureStaticIPTask, AsWeakPtr()));
if (!ipconfig_->RequestIP()) {
return false;
}
#ifndef DISABLE_DHCPV6
// Only start DHCPv6 configuration instance only if DHCPv6 is enabled
// for this device.
if (manager_->IsDHCPv6EnabledForDevice(link_name_)) {
return AcquireIPv6ConfigWithLeaseName(lease_name);
}
#endif // DISABLE_DHCPV6
return true;
}
#ifndef DISABLE_DHCPV6
bool Device::AcquireIPv6ConfigWithLeaseName(const string& lease_name) {
auto dhcpv6_config = dhcp_provider_->CreateIPv6Config(link_name_, lease_name);
dhcpv6_config_ = dhcpv6_config;
dhcpv6_config_->RegisterUpdateCallback(
Bind(&Device::OnDHCPv6ConfigUpdated, AsWeakPtr()));
dhcpv6_config_->RegisterFailureCallback(
Bind(&Device::OnDHCPv6ConfigFailed, AsWeakPtr()));
dhcpv6_config_->RegisterExpireCallback(
Bind(&Device::OnDHCPv6ConfigExpired, AsWeakPtr()));
if (!dhcpv6_config_->RequestIP()) {
return false;
}
return true;
}
#endif // DISABLE_DHCPV6
void Device::UpdateBlackholeUserTraffic() {
SLOG(this, 2) << __func__;
if (ipconfig_) {
bool updated;
if (manager_->ShouldBlackholeUserTraffic(UniqueName())) {
updated = ipconfig_->SetBlackholedUids(manager_->user_traffic_uids());
} else {
updated = ipconfig_->ClearBlackholedUids();
}
if (updated) {
SetupConnection(ipconfig_);
}
}
}
void Device::FetchTrafficCounters(const ServiceRefPtr& old_service,
const ServiceRefPtr& new_service) {
set<string> devices{link_name_};
patchpanel::Client* client = manager_->patchpanel_client();
if (!client) {
return;
}
traffic_counter_callback_id_++;
traffic_counters_callback_map_[traffic_counter_callback_id_] =
BindOnce(&Device::GetTrafficCountersCallback, AsWeakPtr(), old_service,
new_service);
client->GetTrafficCounters(
devices, BindOnce(&Device::GetTrafficCountersPatchpanelCallback,
AsWeakPtr(), traffic_counter_callback_id_));
}
void Device::OnNeighborLinkFailure(
const IPAddress& ip_address,
patchpanel::NeighborReachabilityEventSignal::Role role) {
metrics()->NotifyNeighborLinkMonitorFailure(technology_, ip_address.family(),
role);
// Only uses signals for IPv4 gateway role for comparing.
using NeighborSignal = patchpanel::NeighborReachabilityEventSignal;
if (ip_address.family() == IPAddress::kFamilyIPv6 ||
role == NeighborSignal::DNS_SERVER) {
return;
}
LinkMonitorComparisonSetFailedTime(&neighbor_link_monitor_failed_time_);
}
void Device::OnNeighborLinkRecovered(
const IPAddress& ip_address,
patchpanel::NeighborReachabilityEventSignal::Role role) {
// Only uses signals for IPv4 gateway role for comparing.
using NeighborSignal = patchpanel::NeighborReachabilityEventSignal;
if (ip_address.family() == IPAddress::kFamilyIPv6 ||
role == NeighborSignal::DNS_SERVER) {
return;
}
LinkMonitorComparisonReset();
}
void Device::AssignIPConfig(const IPConfig::Properties& properties) {
DestroyIPConfig();
StartIPv6();
ipconfig_ = new IPConfig(control_interface(), link_name_);
ipconfig_->set_properties(properties);
dispatcher()->PostTask(FROM_HERE, Bind(&Device::OnIPConfigUpdated,
AsWeakPtr(), ipconfig_, true));
}
void Device::DestroyIPConfigLease(const string& name) {
dhcp_provider_->DestroyLease(name);
}
void Device::HelpRegisterDerivedBool(const string& name,
bool (Device::*get)(Error* error),
bool (Device::*set)(const bool&, Error*),
void (Device::*clear)(Error*)) {
store_.RegisterDerivedBool(
name,
BoolAccessor(new CustomAccessor<Device, bool>(this, get, set, clear)));
}
void Device::HelpRegisterConstDerivedString(
const string& name, string (Device::*get)(Error* error)) {
store_.RegisterDerivedString(
name,
StringAccessor(new CustomAccessor<Device, string>(this, get, nullptr)));
}
void Device::HelpRegisterConstDerivedRpcIdentifier(
const string& name, RpcIdentifier (Device::*get)(Error* error)) {
store_.RegisterDerivedRpcIdentifier(
name, RpcIdentifierAccessor(
new CustomAccessor<Device, RpcIdentifier>(this, get, nullptr)));
}
void Device::HelpRegisterConstDerivedRpcIdentifiers(
const string& name, RpcIdentifiers (Device::*get)(Error*)) {
store_.RegisterDerivedRpcIdentifiers(
name, RpcIdentifiersAccessor(new CustomAccessor<Device, RpcIdentifiers>(
this, get, nullptr)));
}
void Device::HelpRegisterConstDerivedUint64(const string& name,
uint64_t (Device::*get)(Error*)) {
store_.RegisterDerivedUint64(
name,
Uint64Accessor(new CustomAccessor<Device, uint64_t>(this, get, nullptr)));
}
void Device::ConnectionTesterCallback(
const PortalDetector::Result& http_result,
const PortalDetector::Result& https_result) {
LOG(INFO) << StringPrintf(
"ConnectionTester completed with HTTP probe phase==%s, "
"status==%s and HTTPS probe phase==%s, status==%s",
PortalDetector::PhaseToString(http_result.phase).c_str(),
PortalDetector::StatusToString(http_result.status).c_str(),
PortalDetector::PhaseToString(https_result.phase).c_str(),
PortalDetector::StatusToString(https_result.status).c_str());
LOG(INFO) << "Device " << link_name() << ": Completed Connectivity Test";
SetLooseRouting(false);
}
void Device::ConfigureStaticIPTask() {
SLOG(this, 2) << __func__ << " selected_service " << selected_service_.get()
<< " ipconfig " << ipconfig_.get();
if (!selected_service_ || !ipconfig_) {
return;
}
if (IsUsingStaticIP()) {
SLOG(this, 2) << __func__ << " "
<< " configuring static IP parameters.";
// If the parameters contain an IP address, apply them now and bring
// the interface up. When DHCP information arrives, it will supplement