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// Copyright (c) 2012 The Chromium 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 "chromeos/dbus/modem_messaging_client.h"
#include <map>
#include <utility>
#include "base/bind.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/message_loop/message_loop.h"
#include "base/values.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_proxy.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace chromeos {
namespace {
// A class which makes method calls for SMS services via the
// org.freedesktop.ModemManager1.Messaging object.
class ModemMessagingProxy {
public:
typedef ModemMessagingClient::SmsReceivedHandler SmsReceivedHandler;
typedef ModemMessagingClient::ListCallback ListCallback;
typedef ModemMessagingClient::DeleteCallback DeleteCallback;
ModemMessagingProxy(dbus::Bus* bus,
const std::string& service_name,
const dbus::ObjectPath& object_path)
: proxy_(bus->GetObjectProxy(service_name, object_path)),
service_name_(service_name),
weak_ptr_factory_(this) {
proxy_->ConnectToSignal(
modemmanager::kModemManager1MessagingInterface,
modemmanager::kSMSAddedSignal,
base::Bind(&ModemMessagingProxy::OnSmsAdded,
weak_ptr_factory_.GetWeakPtr()),
base::Bind(&ModemMessagingProxy::OnSignalConnected,
weak_ptr_factory_.GetWeakPtr()));
}
virtual ~ModemMessagingProxy() {}
// Sets SmsReceived signal handler.
void SetSmsReceivedHandler(const SmsReceivedHandler& handler) {
DCHECK(sms_received_handler_.is_null());
sms_received_handler_ = handler;
}
// Resets SmsReceived signal handler.
void ResetSmsReceivedHandler() {
sms_received_handler_.Reset();
}
// Calls Delete method.
void Delete(const dbus::ObjectPath& message_path,
const DeleteCallback& callback) {
dbus::MethodCall method_call(modemmanager::kModemManager1MessagingInterface,
modemmanager::kSMSDeleteFunction);
dbus::MessageWriter writer(&method_call);
writer.AppendObjectPath(message_path);
proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&ModemMessagingProxy::OnDelete,
weak_ptr_factory_.GetWeakPtr(),
callback));
}
// Calls List method.
virtual void List(const ListCallback& callback) {
dbus::MethodCall method_call(modemmanager::kModemManager1MessagingInterface,
modemmanager::kSMSListFunction);
proxy_->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&ModemMessagingProxy::OnList,
weak_ptr_factory_.GetWeakPtr(),
callback));
}
private:
// Handles SmsAdded signal.
void OnSmsAdded(dbus::Signal* signal) {
dbus::ObjectPath message_path;
bool complete = false;
dbus::MessageReader reader(signal);
if (!reader.PopObjectPath(&message_path) ||
!reader.PopBool(&complete)) {
LOG(ERROR) << "Invalid signal: " << signal->ToString();
return;
}
if (!sms_received_handler_.is_null()) {
sms_received_handler_.Run(message_path, complete);
}
}
// Handles responses of Delete method calls.
void OnDelete(const DeleteCallback& callback, dbus::Response* response) {
if (!response)
return;
callback.Run();
}
// Handles responses of List method calls.
void OnList(const ListCallback& callback, dbus::Response* response) {
if (!response)
return;
dbus::MessageReader reader(response);
std::vector<dbus::ObjectPath> sms_paths;
if (!reader.PopArrayOfObjectPaths(&sms_paths))
LOG(WARNING) << "Invalid response: " << response->ToString();
callback.Run(sms_paths);
}
// Handles the result of signal connection setup.
void OnSignalConnected(const std::string& interface,
const std::string& signal,
bool succeeded) {
LOG_IF(ERROR, !succeeded) << "Connect to " << interface << " "
<< signal << " failed.";
}
dbus::ObjectProxy* proxy_;
std::string service_name_;
SmsReceivedHandler sms_received_handler_;
// Note: This should remain the last member so it'll be destroyed and
// invalidate its weak pointers before any other members are destroyed.
base::WeakPtrFactory<ModemMessagingProxy> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(ModemMessagingProxy);
};
class CHROMEOS_EXPORT ModemMessagingClientImpl : public ModemMessagingClient {
public:
ModemMessagingClientImpl() : bus_(NULL) {}
void SetSmsReceivedHandler(const std::string& service_name,
const dbus::ObjectPath& object_path,
const SmsReceivedHandler& handler) override {
GetProxy(service_name, object_path)->SetSmsReceivedHandler(handler);
}
void ResetSmsReceivedHandler(const std::string& service_name,
const dbus::ObjectPath& object_path) override {
GetProxy(service_name, object_path)->ResetSmsReceivedHandler();
}
void Delete(const std::string& service_name,
const dbus::ObjectPath& object_path,
const dbus::ObjectPath& sms_path,
const DeleteCallback& callback) override {
GetProxy(service_name, object_path)->Delete(sms_path, callback);
}
void List(const std::string& service_name,
const dbus::ObjectPath& object_path,
const ListCallback& callback) override {
GetProxy(service_name, object_path)->List(callback);
}
protected:
void Init(dbus::Bus* bus) override { bus_ = bus; };
private:
using ProxyMap = std::map<std::pair<std::string, std::string>,
scoped_ptr<ModemMessagingProxy>>;
// Returns a SMSProxy for the given service name and object path.
ModemMessagingProxy* GetProxy(const std::string& service_name,
const dbus::ObjectPath& object_path) {
const ProxyMap::key_type key(service_name, object_path.value());
ProxyMap::const_iterator it = proxies_.find(key);
if (it != proxies_.end())
return it->second.get();
// There is no proxy for the service_name and object_path, create it.
scoped_ptr<ModemMessagingProxy> proxy(
new ModemMessagingProxy(bus_, service_name, object_path));
ModemMessagingProxy* proxy_ptr = proxy.get();
proxies_[key] = std::move(proxy);
return proxy_ptr;
}
dbus::Bus* bus_;
ProxyMap proxies_;
DISALLOW_COPY_AND_ASSIGN(ModemMessagingClientImpl);
};
} // namespace
////////////////////////////////////////////////////////////////////////////////
// ModemMessagingClient
ModemMessagingClient::ModemMessagingClient() {}
ModemMessagingClient::~ModemMessagingClient() {}
// static
ModemMessagingClient* ModemMessagingClient::Create() {
return new ModemMessagingClientImpl();
}
} // namespace chromeos
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