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// 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.
#ifndef SHILL_CELLULAR_CAPABILITY_H_
#define SHILL_CELLULAR_CAPABILITY_H_
#include <string>
#include <vector>
#include <base/basictypes.h>
#include <base/callback.h>
#include <base/memory/scoped_ptr.h>
#include <gtest/gtest_prod.h> // for FRIEND_TEST
#include "shill/callbacks.h"
#include "shill/cellular.h"
#include "shill/dbus_properties.h"
namespace shill {
class Cellular;
class Error;
class ProxyFactory;
// Cellular devices instantiate subclasses of CellularCapability that
// handle the specific modem technologies and capabilities.
//
// The CellularCapability is directly subclassed by:
// * CelllularCapabilityUniversal which handles all modems managed by
// a modem manager using the the org.chromium.ModemManager1 DBUS
// interface
// * CellularCapabilityClassic which handles all modems managed by a
// modem manager using the older org.chromium.ModemManager DBUS
// interface. This class is further subclassed to represent CDMA
// and GSM modems
//
// Pictorially:
//
// CellularCapability
// |
// |-- CellularCapabilityUniversal
// |
// |-- CellularCapabilityClassic
// |
// |-- CellularCapabilityGSM
// |
// |-- CellularCapabilityCDMA
//
class CellularCapability {
public:
// SimLockStatus represents the fields in the Cellular.SIMLockStatus
// DBUS property of the shill device.
struct SimLockStatus {
SimLockStatus() : enabled(false), retries_left(0) {}
bool enabled;
std::string lock_type;
uint32 retries_left;
};
static const int kTimeoutActivate;
static const int kTimeoutConnect;
static const int kTimeoutDefault;
static const int kTimeoutEnable;
static const int kTimeoutRegister;
static const int kTimeoutScan;
static const char kModemPropertyIMSI[];
static const char kModemPropertyState[];
// |cellular| is the parent Cellular device.
CellularCapability(Cellular *cellular, ProxyFactory *proxy_factory);
virtual ~CellularCapability();
Cellular *cellular() const { return cellular_; }
ProxyFactory *proxy_factory() const { return proxy_factory_; }
// Invoked by the parent Cellular device when a new service is created.
virtual void OnServiceCreated() = 0;
virtual void SetupConnectProperties(DBusPropertiesMap *properties) = 0;
// StartModem attempts to put the modem in a state in which it is
// usable for creating services and establishing connections (if
// network conditions permit). It potentially consists of multiple
// non-blocking calls to the modem-manager server. After each call,
// control is passed back up to the main loop. Each time a reply to
// a non-blocking call is received, the operation advances to the next
// step, until either an error occurs in one of them, or all the steps
// have been completed, at which point StartModem() is finished.
virtual void StartModem(Error *error,
const ResultCallback &callback) = 0;
// StopModem disconnects and disables a modem asynchronously.
// |callback| is invoked when this completes and the result is passed
// to the callback.
virtual void StopModem(Error *error, const ResultCallback &callback) = 0;
virtual void Connect(const DBusPropertiesMap &properties, Error *error,
const ResultCallback &callback) = 0;
virtual void Disconnect(Error *error, const ResultCallback &callback) = 0;
// Activates the modem. Returns an Error on failure.
// The default implementation fails by returning a kNotSupported error
// to the caller.
virtual void Activate(const std::string &carrier,
Error *error, const ResultCallback &callback) = 0;
// Network registration.
virtual void RegisterOnNetwork(const std::string &network_id,
Error *error,
const ResultCallback &callback) = 0;
virtual bool IsRegistered() = 0;
// If we are informed by means of something other than a signal indicating
// a registration state change that the modem has unregistered from the
// network, we need to update the network-type-specific capability object.
virtual void SetUnregistered(bool searching) = 0;
virtual std::string CreateFriendlyServiceName() = 0;
// PIN management. The default implementation fails by returning an error.
virtual void RequirePIN(const std::string &pin, bool require,
Error *error, const ResultCallback &callback);
virtual void EnterPIN(const std::string &pin,
Error *error, const ResultCallback &callback);
virtual void UnblockPIN(const std::string &unblock_code,
const std::string &pin,
Error *error, const ResultCallback &callback);
virtual void ChangePIN(const std::string &old_pin,
const std::string &new_pin,
Error *error, const ResultCallback &callback);
// The default implementation fails by returning an error.
virtual void SetCarrier(const std::string &carrier,
Error *error, const ResultCallback &callback);
// Asks the modem to scan for networks.
//
// The default implementation fails by filling error with
// kNotSupported.
//
// Subclasses should implement this by fetching scan results
// asynchronously. When the results are ready, update the
// flimflam::kFoundNetworksProperty and send a property change
// notification. Finally, callback must be invoked to inform the
// caller that the scan has completed.
//
// Errors are not generally reported, but on error the
// kFoundNetworksProperty should be cleared and a property change
// notification sent out.
//
// TODO(jglasgow): Refactor to reuse code by putting notification
// logic into Cellular or CellularCapability.
//
// TODO(jglasgow): Implement real error handling.
virtual void Scan(Error *error, const ResultCallback &callback);
// Returns an empty string if the network technology is unknown.
virtual std::string GetNetworkTechnologyString() const = 0;
virtual std::string GetRoamingStateString() const = 0;
virtual void GetSignalQuality() = 0;
virtual std::string GetTypeString() const = 0;
// Called when ModemManager has sent a property change notification
// signal over DBUS.
virtual void OnDBusPropertiesChanged(
const std::string &interface,
const DBusPropertiesMap &changed_properties,
const std::vector<std::string> &invalidated_properties) = 0;
// Should this device allow roaming?
// The decision to allow roaming or not is based on the home
// provider as well as on the user modifiable "allow_roaming"
// property.
virtual bool AllowRoaming() = 0;
protected:
// Releases all proxies held by the object. This is most useful
// during unit tests.
virtual void ReleaseProxies() = 0;
static void OnUnsupportedOperation(const char *operation, Error *error);
// accessor for subclasses to read the allow roaming property
bool allow_roaming_property() const {
return cellular_->allow_roaming_property();
}
private:
friend class CellularCapabilityGSMTest;
friend class CellularCapabilityTest;
friend class CellularCapabilityUniversalTest;
friend class CellularTest;
FRIEND_TEST(CellularCapabilityTest, AllowRoaming);
FRIEND_TEST(CellularTest, Connect);
FRIEND_TEST(CellularTest, TearDown);
Cellular *cellular_;
// Store cached copies of singletons for speed/ease of testing.
ProxyFactory *proxy_factory_;
DISALLOW_COPY_AND_ASSIGN(CellularCapability);
};
} // namespace shill
#endif // SHILL_CELLULAR_CAPABILITY_H_