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// Copyright 2014 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 PEERD_SERVICE_H_
#define PEERD_SERVICE_H_
#include <map>
#include <string>
#include <vector>
#include <base/macros.h>
#include <chromeos/dbus/dbus_object.h>
#include <chromeos/dbus/exported_property_set.h>
#include <chromeos/errors/error.h>
#include "peerd/dbus_data_serialization.h"
#include "peerd/ip_addr.h"
#include "peerd/typedefs.h"
namespace peerd {
namespace constants {
extern const char kSerbusServiceId[];
} // namespace constants
namespace errors {
namespace service {
extern const char kInvalidServiceId[];
extern const char kInvalidServiceInfo[];
} // namespace service
} // namespace errors
// Exposes a Service over DBus. This class is used to represent
// services exposed by the local device as well as remote devices.
class Service {
public:
using ServiceInfo = std::map<std::string, std::string>;
using IpAddresses = std::vector<ip_addr>;
// For mDNS we'll encode each key/value pair as an entry in the TXT
// record. The max length there is 254 bytes + 1 byte to encode the
// length of the key/value.
static const size_t kMaxServiceInfoPairLength = 254;
// mDNS forbids service types longer than 15 characters.
static const size_t kMaxServiceIdLength = 15;
Service(const scoped_refptr<dbus::Bus>& bus,
chromeos::dbus_utils::ExportedObjectManager* object_manager,
const dbus::ObjectPath& path);
bool RegisterAsync(
chromeos::ErrorPtr* error,
const std::string& service_id,
const IpAddresses& addresses,
const ServiceInfo& service_info,
const CompletionAction& completion_callback);
virtual ~Service() = default;
// Getters called by publishers.
const std::string& GetServiceId() const;
const IpAddresses& GetIpAddresses() const;
const ServiceInfo& GetServiceInfo() const;
// Update fields of this service. If any field is found to be invalid, the
// entire update is discarded. Returns true if update is applied.
bool Update(chromeos::ErrorPtr* error,
const IpAddresses& addresses,
const ServiceInfo& info);
private:
static bool IsValidServiceId(chromeos::ErrorPtr* error,
const std::string& service_id);
static bool IsValidServiceInfo(chromeos::ErrorPtr* error,
const ServiceInfo& service_info);
chromeos::dbus_utils::ExportedProperty<std::string> service_id_;
chromeos::dbus_utils::ExportedProperty<IpAddresses> ip_addresses_;
chromeos::dbus_utils::ExportedProperty<ServiceInfo> service_info_;
std::unique_ptr<chromeos::dbus_utils::DBusObject> dbus_object_;
friend class AvahiServicePublisherTest;
friend class ServiceTest;
DISALLOW_COPY_AND_ASSIGN(Service);
};
} // namespace peerd
#endif // PEERD_SERVICE_H_
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