blob: db1e2f0ad07648228c75e72fa305c6a08bbb3b4c [file] [log] [blame]
// Copyright (c) 2012 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/wimax.h"
#include <base/bind.h>
#include <base/string_util.h>
#include <base/stringprintf.h>
#include "shill/key_value_store.h"
#include "shill/logging.h"
#include "shill/manager.h"
#include "shill/proxy_factory.h"
#include "shill/wimax_device_proxy_interface.h"
#include "shill/wimax_service.h"
using base::Bind;
using std::set;
using std::string;
namespace shill {
namespace {
const char *DeviceStatusToString(wimax_manager::DeviceStatus status) {
switch (status) {
case wimax_manager::kDeviceStatusUninitialized:
return "Uninitialized";
case wimax_manager::kDeviceStatusDisabled:
return "Disabled";
case wimax_manager::kDeviceStatusReady:
return "Ready";
case wimax_manager::kDeviceStatusScanning:
return "Scanning";
case wimax_manager::kDeviceStatusConnecting:
return "Connecting";
case wimax_manager::kDeviceStatusConnected:
return "Connected";
default:
return "Unknown";
}
}
} // namespace
const int WiMax::kDefaultConnectTimeoutSeconds = 60;
const int WiMax::kDefaultRPCTimeoutSeconds = 30;
WiMax::WiMax(ControlInterface *control,
EventDispatcher *dispatcher,
Metrics *metrics,
Manager *manager,
const string &link_name,
const string &address,
int interface_index,
const RpcIdentifier &path)
: Device(control, dispatcher, metrics, manager, link_name, address,
interface_index, Technology::kWiMax),
path_(path),
weak_ptr_factory_(this),
scanning_(false),
status_(wimax_manager::kDeviceStatusUninitialized),
proxy_factory_(ProxyFactory::GetInstance()),
connect_timeout_seconds_(kDefaultConnectTimeoutSeconds) {
LOG(INFO) << "WiMAX device created: " << link_name << " @ " << path;
PropertyStore *store = mutable_store();
store->RegisterConstBool(flimflam::kScanningProperty, &scanning_);
}
WiMax::~WiMax() {
LOG(INFO) << "WiMAX device destroyed: " << link_name();
}
void WiMax::Start(Error *error, const EnabledStateChangedCallback &callback) {
SLOG(WiMax, 2) << __func__;
scanning_ = false;
proxy_.reset(proxy_factory_->CreateWiMaxDeviceProxy(path_));
proxy_->set_networks_changed_callback(
Bind(&WiMax::OnNetworksChanged, Unretained(this)));
proxy_->set_status_changed_callback(
Bind(&WiMax::OnStatusChanged, Unretained(this)));
proxy_->Enable(
error, Bind(&WiMax::OnEnableComplete, this, callback),
kDefaultRPCTimeoutSeconds * 1000);
}
void WiMax::Stop(Error *error, const EnabledStateChangedCallback &callback) {
SLOG(WiMax, 2) << __func__;
StopConnectTimeout();
if (pending_service_) {
pending_service_->SetState(Service::kStateIdle);
pending_service_ = NULL;
}
if (selected_service()) {
Error error;
DisconnectFrom(selected_service(), &error);
}
scanning_ = false;
networks_.clear();
manager()->wimax_provider()->OnNetworksChanged();
if (proxy_.get()) {
proxy_->Disable(
error, Bind(&WiMax::OnDisableComplete, this, callback),
kDefaultRPCTimeoutSeconds * 1000);
} else {
OnDisableComplete(callback, Error());
}
}
void WiMax::Scan(ScanType /*scan_type*/, Error *error,
const string &/*reason*/) {
SLOG(WiMax, 2) << __func__;
if (scanning_) {
Error::PopulateAndLog(
error, Error::kInProgress, "Scan already in progress.");
return;
}
scanning_ = true;
proxy_->ScanNetworks(
error, Bind(&WiMax::OnScanNetworksComplete, this),
kDefaultRPCTimeoutSeconds * 1000);
if (error->IsFailure()) {
OnScanNetworksComplete(*error);
}
}
void WiMax::ConnectTo(const WiMaxServiceRefPtr &service, Error *error) {
SLOG(WiMax, 2) << __func__ << "(" << service->GetStorageIdentifier() << ")";
if (pending_service_) {
Error::PopulateAndLog(
error, Error::kInProgress,
base::StringPrintf(
"Pending connect to service %s, ignoring connect request to %s.",
pending_service_->unique_name().c_str(),
service->GetStorageIdentifier().c_str()));
return;
}
service->SetState(Service::kStateAssociating);
pending_service_ = service;
// We use the RPC device status to determine the outcome of the connect
// operation by listening for status updates in OnStatusChanged. A transition
// to Connected means success. A transition to Connecting and then to a status
// different than Connected means failure. Also, schedule a connect timeout to
// guard against the RPC device never transitioning to a Connecting or a
// Connected state.
status_ = wimax_manager::kDeviceStatusUninitialized;
StartConnectTimeout();
KeyValueStore parameters;
service->GetConnectParameters(&parameters);
proxy_->Connect(
service->GetNetworkObjectPath(), parameters,
error, Bind(&WiMax::OnConnectComplete, this),
kDefaultRPCTimeoutSeconds * 1000);
if (error->IsFailure()) {
OnConnectComplete(*error);
}
}
void WiMax::DisconnectFrom(const ServiceRefPtr &service, Error *error) {
SLOG(WiMax, 2) << __func__;
if (pending_service_) {
Error::PopulateAndLog(
error, Error::kInProgress,
base::StringPrintf(
"Pending connect to service %s, "
"ignoring disconnect request from %s.",
pending_service_->unique_name().c_str(),
service->GetStorageIdentifier().c_str()));
return;
}
if (selected_service() && service != selected_service()) {
Error::PopulateAndLog(
error, Error::kNotConnected,
base::StringPrintf(
"Current service is %s, ignoring disconnect request from %s.",
selected_service()->unique_name().c_str(),
service->GetStorageIdentifier().c_str()));
return;
}
DropConnection();
proxy_->Disconnect(
error, Bind(&WiMax::OnDisconnectComplete, this),
kDefaultRPCTimeoutSeconds * 1000);
if (error->IsFailure()) {
OnDisconnectComplete(*error);
}
}
bool WiMax::IsIdle() const {
return !pending_service_ && !selected_service();
}
void WiMax::OnServiceStopped(const WiMaxServiceRefPtr &service) {
SLOG(WiMax, 2) << __func__;
if (service == selected_service()) {
DropConnection();
}
if (service == pending_service_) {
pending_service_ = NULL;
}
}
void WiMax::OnDeviceVanished() {
LOG(INFO) << "WiMAX device vanished: " << link_name();
proxy_.reset();
DropService(Service::kStateIdle);
// Disable the device. This will also clear any relevant properties such as
// the live network set.
SetEnabled(false);
}
void WiMax::OnScanNetworksComplete(const Error &/*error*/) {
SLOG(WiMax, 2) << __func__;
scanning_ = false;
// The networks are updated when the NetworksChanged signal is received.
}
void WiMax::OnConnectComplete(const Error &error) {
SLOG(WiMax, 2) << __func__;
if (error.IsSuccess()) {
// Nothing to do -- the connection process is resumed on the StatusChanged
// signal.
return;
}
DropService(Service::kStateFailure);
}
void WiMax::OnDisconnectComplete(const Error &/*error*/) {
SLOG(WiMax, 2) << __func__;
}
void WiMax::OnEnableComplete(const EnabledStateChangedCallback &callback,
const Error &error) {
SLOG(WiMax, 2) << __func__;
if (error.IsFailure()) {
proxy_.reset();
} else {
LOG(INFO) << "WiMAX device " << link_name() << " enabled.";
// Updates the live networks based on the current WiMaxManager.Device
// networks. The RPC device will signal when the network set changes.
Error e;
OnNetworksChanged(proxy_->Networks(&e));
}
callback.Run(error);
}
void WiMax::OnDisableComplete(const EnabledStateChangedCallback &callback,
const Error &error) {
LOG(INFO) << "WiMAX device " << link_name() << " disabled.";
proxy_.reset();
callback.Run(error);
}
void WiMax::OnNetworksChanged(const RpcIdentifiers &networks) {
SLOG(WiMax, 2) << __func__;
networks_.clear();
networks_.insert(networks.begin(), networks.end());
manager()->wimax_provider()->OnNetworksChanged();
}
void WiMax::OnStatusChanged(wimax_manager::DeviceStatus status) {
SLOG(WiMax, 2) << "WiMAX device " << link_name()
<< " status: " << DeviceStatusToString(status);
wimax_manager::DeviceStatus old_status = status_;
status_ = status;
switch (status) {
case wimax_manager::kDeviceStatusConnected:
if (!pending_service_) {
LOG(WARNING) << "Unexpected status change; ignored.";
return;
}
// Stops the connect timeout -- the DHCP provider has a separate timeout.
StopConnectTimeout();
if (AcquireIPConfig()) {
LOG(INFO) << "WiMAX device " << link_name() << " connected to "
<< pending_service_->GetStorageIdentifier();
SelectService(pending_service_);
pending_service_ = NULL;
SetServiceState(Service::kStateConfiguring);
} else {
DropService(Service::kStateFailure);
}
break;
case wimax_manager::kDeviceStatusConnecting:
LOG(INFO) << "WiMAX device " << link_name() << " connecting...";
// Nothing to do.
break;
default:
// We may receive a queued up status update (e.g., to Scanning) before
// receiving the status update to Connecting, so be careful to fail the
// service only on the right status transition.
if (old_status == wimax_manager::kDeviceStatusConnecting ||
old_status == wimax_manager::kDeviceStatusConnected) {
LOG(INFO) << "WiMAX device " << link_name()
<< " status: " << DeviceStatusToString(old_status)
<< " -> " << DeviceStatusToString(status);
// TODO(benchan): Investigate a method to determine if the connection
// failure is due to incorrect EAP credentials and indicate that via
// Service::kFailureBadPassphrase (crosbug.com/p/16324).
DropService(Service::kStateFailure);
}
break;
}
}
void WiMax::DropService(Service::ConnectState state) {
SLOG(WiMax, 2) << __func__
<< "(" << Service::ConnectStateToString(state) << ")";
StopConnectTimeout();
if (pending_service_) {
LOG(WARNING) << "Unable to initiate connection to: "
<< pending_service_->GetStorageIdentifier();
pending_service_->SetState(state);
pending_service_ = NULL;
}
if (selected_service()) {
LOG(WARNING) << "Service disconnected: "
<< selected_service()->GetStorageIdentifier();
selected_service()->SetState(state);
DropConnection();
}
}
void WiMax::StartConnectTimeout() {
SLOG(WiMax, 2) << __func__;
if (IsConnectTimeoutStarted()) {
return;
}
connect_timeout_callback_.Reset(
Bind(&WiMax::OnConnectTimeout, weak_ptr_factory_.GetWeakPtr()));
dispatcher()->PostDelayedTask(
connect_timeout_callback_.callback(), connect_timeout_seconds_ * 1000);
}
void WiMax::StopConnectTimeout() {
SLOG(WiMax, 2) << __func__;
connect_timeout_callback_.Cancel();
}
bool WiMax::IsConnectTimeoutStarted() const {
return !connect_timeout_callback_.IsCancelled();
}
void WiMax::OnConnectTimeout() {
LOG(ERROR) << "WiMAX device " << link_name() << ": connect timeout.";
StopConnectTimeout();
DropService(Service::kStateFailure);
}
} // namespace shill