openthread/src/core/common/settings.hpp

1094 lines
35 KiB
C++

/*
* Copyright (c) 2016, The OpenThread Authors.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @file
* This file includes definitions for non-volatile storage of settings.
*/
#ifndef SETTINGS_HPP_
#define SETTINGS_HPP_
#include "openthread-core-config.h"
#include <openthread/platform/settings.h>
#include "common/clearable.hpp"
#include "common/encoding.hpp"
#include "common/equatable.hpp"
#include "common/locator.hpp"
#include "common/log.hpp"
#include "common/non_copyable.hpp"
#include "common/settings_driver.hpp"
#include "crypto/ecdsa.hpp"
#include "mac/mac_types.hpp"
#include "meshcop/dataset.hpp"
#include "net/ip6_address.hpp"
#include "utils/flash.hpp"
#include "utils/slaac_address.hpp"
namespace ot {
class Settings;
/**
* This class defines the base class used by `Settings` and `Settings::ChildInfoIterator`.
*
* This class provides structure definitions for different settings keys.
*
*/
class SettingsBase : public InstanceLocator
{
protected:
enum Action : uint8_t
{
kActionRead,
kActionSave,
kActionResave,
kActionDelete,
#if OPENTHREAD_FTD
kActionAdd,
kActionRemove,
kActionDeleteAll,
#endif
};
public:
/**
* Rules for updating existing value structures.
*
* 1. Modifying existing key value fields in settings MUST only be
* done by appending new fields. Existing fields MUST NOT be
* deleted or modified in any way.
*
* 2. To support backward compatibility (rolling back to an older
* software version), code reading and processing key values MUST
* process key values that have longer length. Additionally, newer
* versions MUST update/maintain values in existing key value
* fields.
*
* 3. To support forward compatibility (rolling forward to a newer
* software version), code reading and processing key values MUST
* process key values that have shorter length.
*
* 4. New Key IDs may be defined in the future with the understanding
* that such key values are not backward compatible.
*
*/
/**
* This enumeration defines the keys of settings.
*
*/
enum Key : uint16_t
{
kKeyActiveDataset = OT_SETTINGS_KEY_ACTIVE_DATASET,
kKeyPendingDataset = OT_SETTINGS_KEY_PENDING_DATASET,
kKeyNetworkInfo = OT_SETTINGS_KEY_NETWORK_INFO,
kKeyParentInfo = OT_SETTINGS_KEY_PARENT_INFO,
kKeyChildInfo = OT_SETTINGS_KEY_CHILD_INFO,
kKeySlaacIidSecretKey = OT_SETTINGS_KEY_SLAAC_IID_SECRET_KEY,
kKeyDadInfo = OT_SETTINGS_KEY_DAD_INFO,
kKeySrpEcdsaKey = OT_SETTINGS_KEY_SRP_ECDSA_KEY,
kKeySrpClientInfo = OT_SETTINGS_KEY_SRP_CLIENT_INFO,
kKeySrpServerInfo = OT_SETTINGS_KEY_SRP_SERVER_INFO,
kKeyBrUlaPrefix = OT_SETTINGS_KEY_BR_ULA_PREFIX,
};
static constexpr Key kLastKey = kKeyBrUlaPrefix; ///< The last (numerically) enumerator value in `Key`.
static_assert(static_cast<uint16_t>(kLastKey) < static_cast<uint16_t>(OT_SETTINGS_KEY_VENDOR_RESERVED_MIN),
"Core settings keys overlap with vendor reserved keys");
/**
* This structure represents the device's own network information for settings storage.
*
*/
OT_TOOL_PACKED_BEGIN
class NetworkInfo : private Clearable<NetworkInfo>
{
friend class Settings;
public:
static constexpr Key kKey = kKeyNetworkInfo; ///< The associated key.
/**
* This method initializes the `NetworkInfo` object.
*
*/
void Init(void)
{
Clear();
SetVersion(OT_THREAD_VERSION_1_1);
}
/**
* This method returns the Thread role.
*
* @returns The Thread role.
*
*/
uint8_t GetRole(void) const { return mRole; }
/**
* This method sets the Thread role.
*
* @param[in] aRole The Thread Role.
*
*/
void SetRole(uint8_t aRole) { mRole = aRole; }
/**
* This method returns the Thread device mode.
*
* @returns the Thread device mode.
*
*/
uint8_t GetDeviceMode(void) const { return mDeviceMode; }
/**
* This method sets the Thread device mode.
*
* @param[in] aDeviceMode The Thread device mode.
*
*/
void SetDeviceMode(uint8_t aDeviceMode) { mDeviceMode = aDeviceMode; }
/**
* This method returns the RLOC16.
*
* @returns The RLOC16.
*
*/
uint16_t GetRloc16(void) const { return Encoding::LittleEndian::HostSwap16(mRloc16); }
/**
* This method sets the RLOC16.
*
* @param[in] aRloc16 The RLOC16.
*
*/
void SetRloc16(uint16_t aRloc16) { mRloc16 = Encoding::LittleEndian::HostSwap16(aRloc16); }
/**
* This method returns the key sequence.
*
* @returns The key sequence.
*
*/
uint32_t GetKeySequence(void) const { return Encoding::LittleEndian::HostSwap32(mKeySequence); }
/**
* This method sets the key sequence.
*
* @param[in] aKeySequence The key sequence.
*
*/
void SetKeySequence(uint32_t aKeySequence) { mKeySequence = Encoding::LittleEndian::HostSwap32(aKeySequence); }
/**
* This method returns the MLE frame counter.
*
* @returns The MLE frame counter.
*
*/
uint32_t GetMleFrameCounter(void) const { return Encoding::LittleEndian::HostSwap32(mMleFrameCounter); }
/**
* This method sets the MLE frame counter.
*
* @param[in] aMleFrameCounter The MLE frame counter.
*
*/
void SetMleFrameCounter(uint32_t aMleFrameCounter)
{
mMleFrameCounter = Encoding::LittleEndian::HostSwap32(aMleFrameCounter);
}
/**
* This method returns the MAC frame counter.
*
* @returns The MAC frame counter.
*
*/
uint32_t GetMacFrameCounter(void) const { return Encoding::LittleEndian::HostSwap32(mMacFrameCounter); }
/**
* This method sets the MAC frame counter.
*
* @param[in] aMacFrameCounter The MAC frame counter.
*
*/
void SetMacFrameCounter(uint32_t aMacFrameCounter)
{
mMacFrameCounter = Encoding::LittleEndian::HostSwap32(aMacFrameCounter);
}
/**
* This method returns the previous partition ID.
*
* @returns The previous partition ID.
*
*/
uint32_t GetPreviousPartitionId(void) const { return Encoding::LittleEndian::HostSwap32(mPreviousPartitionId); }
/**
* This method sets the previous partition id.
*
* @param[in] aPreviousPartitionId The previous partition ID.
*
*/
void SetPreviousPartitionId(uint32_t aPreviousPartitionId)
{
mPreviousPartitionId = Encoding::LittleEndian::HostSwap32(aPreviousPartitionId);
}
/**
* This method returns the extended address.
*
* @returns The extended address.
*
*/
const Mac::ExtAddress &GetExtAddress(void) const { return mExtAddress; }
/**
* This method sets the extended address.
*
* @param[in] aExtAddress The extended address.
*
*/
void SetExtAddress(const Mac::ExtAddress &aExtAddress) { mExtAddress = aExtAddress; }
/**
* This method returns the Mesh Local Interface Identifier.
*
* @returns The Mesh Local Interface Identifier.
*
*/
const Ip6::InterfaceIdentifier &GetMeshLocalIid(void) const { return mMlIid; }
/**
* This method sets the Mesh Local Interface Identifier.
*
* @param[in] aMeshLocalIid The Mesh Local Interface Identifier.
*
*/
void SetMeshLocalIid(const Ip6::InterfaceIdentifier &aMeshLocalIid) { mMlIid = aMeshLocalIid; }
/**
* This method returns the Thread version.
*
* @returns The Thread version.
*
*/
uint16_t GetVersion(void) const { return Encoding::LittleEndian::HostSwap16(mVersion); }
/**
* This method sets the Thread version.
*
* @param[in] aVersion The Thread version.
*
*/
void SetVersion(uint16_t aVersion) { mVersion = Encoding::LittleEndian::HostSwap16(aVersion); }
private:
void Log(Action aAction) const;
uint8_t mRole; ///< Current Thread role.
uint8_t mDeviceMode; ///< Device mode setting.
uint16_t mRloc16; ///< RLOC16
uint32_t mKeySequence; ///< Key Sequence
uint32_t mMleFrameCounter; ///< MLE Frame Counter
uint32_t mMacFrameCounter; ///< MAC Frame Counter
uint32_t mPreviousPartitionId; ///< PartitionId
Mac::ExtAddress mExtAddress; ///< Extended Address
Ip6::InterfaceIdentifier mMlIid; ///< IID from ML-EID
uint16_t mVersion; ///< Version
} OT_TOOL_PACKED_END;
/**
* This structure represents the parent information for settings storage.
*
*/
OT_TOOL_PACKED_BEGIN
class ParentInfo : private Clearable<ParentInfo>
{
friend class Settings;
public:
static constexpr Key kKey = kKeyParentInfo; ///< The associated key.
/**
* This method initializes the `ParentInfo` object.
*
*/
void Init(void)
{
Clear();
SetVersion(OT_THREAD_VERSION_1_1);
}
/**
* This method returns the extended address.
*
* @returns The extended address.
*
*/
const Mac::ExtAddress &GetExtAddress(void) const { return mExtAddress; }
/**
* This method sets the extended address.
*
* @param[in] aExtAddress The extended address.
*
*/
void SetExtAddress(const Mac::ExtAddress &aExtAddress) { mExtAddress = aExtAddress; }
/**
* This method returns the Thread version.
*
* @returns The Thread version.
*
*/
uint16_t GetVersion(void) const { return Encoding::LittleEndian::HostSwap16(mVersion); }
/**
* This method sets the Thread version.
*
* @param[in] aVersion The Thread version.
*
*/
void SetVersion(uint16_t aVersion) { mVersion = Encoding::LittleEndian::HostSwap16(aVersion); }
private:
void Log(Action aAction) const;
Mac::ExtAddress mExtAddress; ///< Extended Address
uint16_t mVersion; ///< Version
} OT_TOOL_PACKED_END;
#if OPENTHREAD_FTD
/**
* This structure represents the child information for settings storage.
*
*/
OT_TOOL_PACKED_BEGIN
class ChildInfo
{
friend class Settings;
public:
static constexpr Key kKey = kKeyChildInfo; ///< The associated key.
/**
* This method clears the struct object (setting all the fields to zero).
*
*/
void Init(void)
{
memset(this, 0, sizeof(*this));
SetVersion(OT_THREAD_VERSION_1_1);
}
/**
* This method returns the extended address.
*
* @returns The extended address.
*
*/
const Mac::ExtAddress &GetExtAddress(void) const { return mExtAddress; }
/**
* This method sets the extended address.
*
* @param[in] aExtAddress The extended address.
*
*/
void SetExtAddress(const Mac::ExtAddress &aExtAddress) { mExtAddress = aExtAddress; }
/**
* This method returns the child timeout.
*
* @returns The child timeout.
*
*/
uint32_t GetTimeout(void) const { return Encoding::LittleEndian::HostSwap32(mTimeout); }
/**
* This method sets the child timeout.
*
* @param[in] aTimeout The child timeout.
*
*/
void SetTimeout(uint32_t aTimeout) { mTimeout = Encoding::LittleEndian::HostSwap32(aTimeout); }
/**
* This method returns the RLOC16.
*
* @returns The RLOC16.
*
*/
uint16_t GetRloc16(void) const { return Encoding::LittleEndian::HostSwap16(mRloc16); }
/**
* This method sets the RLOC16.
*
* @param[in] aRloc16 The RLOC16.
*
*/
void SetRloc16(uint16_t aRloc16) { mRloc16 = Encoding::LittleEndian::HostSwap16(aRloc16); }
/**
* This method returns the Thread device mode.
*
* @returns The Thread device mode.
*
*/
uint8_t GetMode(void) const { return mMode; }
/**
* This method sets the Thread device mode.
*
* @param[in] aMode The Thread device mode.
*
*/
void SetMode(uint8_t aMode) { mMode = aMode; }
/**
* This method returns the Thread version.
*
* @returns The Thread version.
*
*/
uint16_t GetVersion(void) const { return Encoding::LittleEndian::HostSwap16(mVersion); }
/**
* This method sets the Thread version.
*
* @param[in] aVersion The Thread version.
*
*/
void SetVersion(uint16_t aVersion) { mVersion = Encoding::LittleEndian::HostSwap16(aVersion); }
private:
void Log(Action aAction) const;
Mac::ExtAddress mExtAddress; ///< Extended Address
uint32_t mTimeout; ///< Timeout
uint16_t mRloc16; ///< RLOC16
uint8_t mMode; ///< The MLE device mode
uint16_t mVersion; ///< Version
} OT_TOOL_PACKED_END;
#endif // OPENTHREAD_FTD
#if OPENTHREAD_CONFIG_IP6_SLAAC_ENABLE
/**
* This class defines constants and types for SLAAC IID Secret key settings.
*
*/
class SlaacIidSecretKey
{
public:
static constexpr Key kKey = kKeySlaacIidSecretKey; ///< The associated key.
typedef Utils::Slaac::IidSecretKey ValueType; ///< The associated value type.
private:
SlaacIidSecretKey(void) = default;
};
#endif
#if OPENTHREAD_CONFIG_DUA_ENABLE
/**
* This structure represents the duplicate address detection information for settings storage.
*
*/
OT_TOOL_PACKED_BEGIN
class DadInfo : private Clearable<DadInfo>
{
friend class Settings;
public:
static constexpr Key kKey = kKeyDadInfo; ///< The associated key.
/**
* This method initializes the `DadInfo` object.
*
*/
void Init(void) { Clear(); }
/**
* This method returns the Dad Counter.
*
* @returns The Dad Counter value.
*
*/
uint8_t GetDadCounter(void) const { return mDadCounter; }
/**
* This method sets the Dad Counter.
*
* @param[in] aDadCounter The Dad Counter value.
*
*/
void SetDadCounter(uint8_t aDadCounter) { mDadCounter = aDadCounter; }
private:
void Log(Action aAction) const;
uint8_t mDadCounter; ///< Dad Counter used to resolve address conflict in Thread 1.2 DUA feature.
} OT_TOOL_PACKED_END;
#endif // OPENTHREAD_CONFIG_DUA_ENABLE
#if OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE
/**
* This class defines constants and types for BR ULA prefix settings.
*
*/
class BrUlaPrefix
{
public:
static constexpr Key kKey = kKeyBrUlaPrefix; ///< The associated key.
typedef Ip6::Prefix ValueType; ///< The associated value type.
private:
BrUlaPrefix(void) = default;
};
#endif
#if OPENTHREAD_CONFIG_SRP_CLIENT_ENABLE
/**
* This class defines constants and types for SRP ECDSA key settings.
*
*/
class SrpEcdsaKey
{
public:
static constexpr Key kKey = kKeySrpEcdsaKey; ///< The associated key.
typedef Crypto::Ecdsa::P256::KeyPair ValueType; ///< The associated value type.
private:
SrpEcdsaKey(void) = default;
};
#if OPENTHREAD_CONFIG_SRP_CLIENT_SAVE_SELECTED_SERVER_ENABLE
/**
* This structure represents the SRP client info (selected server address).
*
*/
OT_TOOL_PACKED_BEGIN
class SrpClientInfo : private Clearable<SrpClientInfo>
{
friend class Settings;
public:
static constexpr Key kKey = kKeySrpClientInfo; ///< The associated key.
/**
* This method initializes the `SrpClientInfo` object.
*
*/
void Init(void) { Clear(); }
/**
* This method returns the server IPv6 address.
*
* @returns The server IPv6 address.
*
*/
const Ip6::Address &GetServerAddress(void) const { return mServerAddress; }
/**
* This method sets the server IPv6 address.
*
* @param[in] aAddress The server IPv6 address.
*
*/
void SetServerAddress(const Ip6::Address &aAddress) { mServerAddress = aAddress; }
/**
* This method returns the server port number.
*
* @returns The server port number.
*
*/
uint16_t GetServerPort(void) const { return Encoding::LittleEndian::HostSwap16(mServerPort); }
/**
* This method sets the server port number.
*
* @param[in] aPort The server port number.
*
*/
void SetServerPort(uint16_t aPort) { mServerPort = Encoding::LittleEndian::HostSwap16(aPort); }
private:
void Log(Action aAction) const;
Ip6::Address mServerAddress;
uint16_t mServerPort; // (in little-endian encoding)
} OT_TOOL_PACKED_END;
#endif // OPENTHREAD_CONFIG_SRP_CLIENT_SAVE_SELECTED_SERVER_ENABLE
#endif // OPENTHREAD_CONFIG_SRP_CLIENT_ENABLE
#if OPENTHREAD_CONFIG_SRP_SERVER_ENABLE && OPENTHREAD_CONFIG_SRP_SERVER_PORT_SWITCH_ENABLE
/**
* This structure represents the SRP server info.
*
*/
OT_TOOL_PACKED_BEGIN
class SrpServerInfo : private Clearable<SrpServerInfo>
{
friend class Settings;
public:
static constexpr Key kKey = kKeySrpServerInfo; ///< The associated key.
/**
* This method initializes the `SrpServerInfo` object.
*
*/
void Init(void) { Clear(); }
/**
* This method returns the server port number.
*
* @returns The server port number.
*
*/
uint16_t GetPort(void) const { return Encoding::LittleEndian::HostSwap16(mPort); }
/**
* This method sets the server port number.
*
* @param[in] aPort The server port number.
*
*/
void SetPort(uint16_t aPort) { mPort = Encoding::LittleEndian::HostSwap16(aPort); }
private:
void Log(Action aAction) const;
uint16_t mPort; // (in little-endian encoding)
} OT_TOOL_PACKED_END;
#endif // OPENTHREAD_CONFIG_SRP_SERVER_ENABLE && OPENTHREAD_CONFIG_SRP_SERVER_PORT_SWITCH_ENABLE
protected:
explicit SettingsBase(Instance &aInstance)
: InstanceLocator(aInstance)
{
}
#if OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE
static void LogPrefix(Action aAction, Key aKey, const Ip6::Prefix &aPrefix);
#endif
#if OT_SHOULD_LOG_AT(OT_LOG_LEVEL_WARN)
static const char *KeyToString(Key aKey);
#endif
#if OT_SHOULD_LOG_AT(OT_LOG_LEVEL_INFO)
static const char *ActionToString(Action aAction);
#endif
};
/**
* This class defines methods related to non-volatile storage of settings.
*
*/
class Settings : public SettingsBase, private NonCopyable
{
class ChildInfoIteratorBuilder;
public:
/**
* This constructor initializes a `Settings` object.
*
* @param[in] aInstance A reference to the OpenThread instance.
*
*/
explicit Settings(Instance &aInstance)
: SettingsBase(aInstance)
{
}
/**
* This method initializes the platform settings (non-volatile) module.
*
* This should be called before any other method from this class.
*
*/
void Init(void);
/**
* This method de-initializes the platform settings (non-volatile) module.
*
* This method should be called when OpenThread instance is no longer in use.
*
*/
void Deinit(void);
/**
* This method removes all settings from the non-volatile store.
*
*/
void Wipe(void);
/**
* This method saves the Operational Dataset (active or pending).
*
* @param[in] aType The Dataset type (active or pending) to save.
* @param[in] aDataset A reference to a `Dataset` object to be saved.
*
* @retval kErrorNone Successfully saved the Dataset.
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
Error SaveOperationalDataset(MeshCoP::Dataset::Type aType, const MeshCoP::Dataset &aDataset);
/**
* This method reads the Operational Dataset (active or pending).
*
* @param[in] aType The Dataset type (active or pending) to read.
* @param[out] aDataset A reference to a `Dataset` object to output the read content.
*
* @retval kErrorNone Successfully read the Dataset.
* @retval kErrorNotFound No corresponding value in the setting store.
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
Error ReadOperationalDataset(MeshCoP::Dataset::Type aType, MeshCoP::Dataset &aDataset) const;
/**
* This method deletes the Operational Dataset (active/pending) from settings.
*
* @param[in] aType The Dataset type (active or pending) to delete.
*
* @retval kErrorNone Successfully deleted the Dataset.
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
Error DeleteOperationalDataset(MeshCoP::Dataset::Type aType);
/**
* This template method reads a specified settings entry.
*
* The template type `EntryType` specifies the entry's value data structure. It must provide the following:
*
* - It must provide a constant `EntryType::kKey` to specify the associated entry settings key.
* - It must provide method `Init()` to initialize the `aEntry` object.
*
* This version of `Read<EntryType>` is intended for use with entries that define a data structure which represents
* the entry's value, e.g., `NetworkInfo`, `ParentInfo`, `DadInfo`, etc.
*
* @tparam EntryType The settings entry type.
*
* @param[out] aEntry A reference to a entry data structure to output the read content.
*
* @retval kErrorNone Successfully read the entry.
* @retval kErrorNotFound No corresponding value in the setting store.
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
template <typename EntryType> Error Read(EntryType &aEntry) const
{
aEntry.Init();
return ReadEntry(EntryType::kKey, &aEntry, sizeof(EntryType));
}
/**
* This template method reads a specified settings entry.
*
* The template type `EntryType` provides information about the entry's value type. It must provide the following:
*
* - It must provide a constant `EntryType::kKey` to specify the associated entry settings key.
* - It must provide a nested type `EntryType::ValueType` to specify the associated entry value type.
*
* This version of `Read<EntryType>` is intended for use with entries that have a simple entry value type (which can
* be represented by an existing type), e.g., `OmrPrefix` (using `Ip6::Prefix` as the value type).
*
* @tparam EntryType The settings entry type.
*
* @param[out] aValue A reference to a value type object to output the read content.
*
* @retval kErrorNone Successfully read the value.
* @retval kErrorNotFound No corresponding value in the setting store.
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
template <typename EntryType> Error Read(typename EntryType::ValueType &aValue) const
{
return ReadEntry(EntryType::kKey, &aValue, sizeof(typename EntryType::ValueType));
}
/**
* This template method saves a specified settings entry.
*
* The template type `EntryType` specifies the entry's value data structure. It must provide the following:
*
* - It must provide a constant `EntryType::kKey` to specify the associated entry settings key.
*
* This version of `Save<EntryType>` is intended for use with entries that define a data structure which represents
* the entry's value, e.g., `NetworkInfo`, `ParentInfo`, `DadInfo`, etc.
*
* @tparam EntryType The settings entry type.
*
* @param[in] aEntry The entry value to be saved.
*
* @retval kErrorNone Successfully saved Network Info in settings.
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
template <typename EntryType> Error Save(const EntryType &aEntry)
{
EntryType prev;
return SaveEntry(EntryType::kKey, &aEntry, &prev, sizeof(EntryType));
}
/**
* This template method saves a specified settings entry.
*
* The template type `EntryType` provides information about the entry's value type. It must provide the following:
*
* - It must provide a constant `EntryType::kKey` to specify the associated entry settings key.
* - It must provide a nested type `EntryType::ValueType` to specify the associated entry value type.
*
* This version of `Save<EntryType>` is intended for use with entries that have a simple entry value type (which can
* be represented by an existing type), e.g., `OmrPrefix` (using `Ip6::Prefix` as the value type).
*
* @tparam EntryType The settings entry type.
*
* @param[in] aValue The entry value to be saved.
*
* @retval kErrorNone Successfully saved Network Info in settings.
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
template <typename EntryType> Error Save(const typename EntryType::ValueType &aValue)
{
typename EntryType::ValueType prev;
return SaveEntry(EntryType::kKey, &aValue, &prev, sizeof(typename EntryType::ValueType));
}
/**
* This template method deletes a specified setting entry.
*
* The template type `EntryType` provides information about the entry's key.
*
* - It must provide a constant `EntryType::kKey` to specify the associated entry settings key.
*
* @tparam EntryType The settings entry type.
*
* @retval kErrorNone Successfully deleted the value.
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
template <typename EntryType> Error Delete(void) { return DeleteEntry(EntryType::kKey); }
#if OPENTHREAD_FTD
/**
* This method adds a Child Info entry to settings.
*
* @note Child Info is a list-based settings property and can contain multiple entries.
*
* @param[in] aChildInfo A reference to a `ChildInfo` structure to be saved/added.
*
* @retval kErrorNone Successfully saved the Child Info in settings.
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
Error AddChildInfo(const ChildInfo &aChildInfo);
/**
* This method deletes all Child Info entries from the settings.
*
* @note Child Info is a list-based settings property and can contain multiple entries.
*
* @retval kErrorNone Successfully deleted the value.
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
Error DeleteAllChildInfo(void);
/**
* This method enables range-based `for` loop iteration over all child info entries in the `Settings`.
*
* This method should be used as follows:
*
* for (const ChildInfo &childInfo : Get<Settings>().IterateChildInfo()) { ... }
*
*
* @returns A ChildInfoIteratorBuilder instance.
*
*/
ChildInfoIteratorBuilder IterateChildInfo(void) { return ChildInfoIteratorBuilder(GetInstance()); }
/**
* This class defines an iterator to access all Child Info entries in the settings.
*
*/
class ChildInfoIterator : public SettingsBase, public Unequatable<ChildInfoIterator>
{
friend class ChildInfoIteratorBuilder;
public:
/**
* This constructor initializes a `ChildInfoInterator` object.
*
* @param[in] aInstance A reference to the OpenThread instance.
*
*/
explicit ChildInfoIterator(Instance &aInstance);
/**
* This method indicates whether there are no more Child Info entries in the list (iterator has reached end of
* the list), or the current entry is valid.
*
* @retval TRUE There are no more entries in the list (reached end of the list).
* @retval FALSE The current entry is valid.
*
*/
bool IsDone(void) const { return mIsDone; }
/**
* This method overloads operator `++` (pre-increment) to advance the iterator to move to the next Child Info
* entry in the list (if any).
*
*/
void operator++(void) { Advance(); }
/**
* This method overloads operator `++` (post-increment) to advance the iterator to move to the next Child Info
* entry in the list (if any).
*
*/
void operator++(int) { Advance(); }
/**
* This method gets the Child Info corresponding to the current iterator entry in the list.
*
* @note This method should be used only if `IsDone()` is returning FALSE indicating that the iterator is
* pointing to a valid entry.
*
* @returns A reference to `ChildInfo` structure corresponding to current iterator entry.
*
*/
const ChildInfo &GetChildInfo(void) const { return mChildInfo; }
/**
* This method deletes the current Child Info entry.
*
* @retval kErrorNone The entry was deleted successfully.
* @retval kErrorInvalidState The entry is not valid (iterator has reached end of list).
* @retval kErrorNotImplemented The platform does not implement settings functionality.
*
*/
Error Delete(void);
/**
* This method overloads the `*` dereference operator and gets a reference to `ChildInfo` entry to which the
* iterator is currently pointing.
*
* @note This method should be used only if `IsDone()` is returning FALSE indicating that the iterator is
* pointing to a valid entry.
*
*
* @returns A reference to the `ChildInfo` entry currently pointed by the iterator.
*
*/
const ChildInfo &operator*(void)const { return mChildInfo; }
/**
* This method overloads operator `==` to evaluate whether or not two iterator instances are equal.
*
* @param[in] aOther The other iterator to compare with.
*
* @retval TRUE If the two iterator objects are equal
* @retval FALSE If the two iterator objects are not equal.
*
*/
bool operator==(const ChildInfoIterator &aOther) const
{
return (mIsDone && aOther.mIsDone) || (!mIsDone && !aOther.mIsDone && (mIndex == aOther.mIndex));
}
private:
enum IteratorType : uint8_t
{
kEndIterator,
};
ChildInfoIterator(Instance &aInstance, IteratorType)
: SettingsBase(aInstance)
, mIndex(0)
, mIsDone(true)
{
}
void Advance(void);
void Read(void);
ChildInfo mChildInfo;
uint16_t mIndex;
bool mIsDone;
};
#endif // OPENTHREAD_FTD
private:
#if OPENTHREAD_FTD
class ChildInfoIteratorBuilder : public InstanceLocator
{
public:
explicit ChildInfoIteratorBuilder(Instance &aInstance)
: InstanceLocator(aInstance)
{
}
ChildInfoIterator begin(void) { return ChildInfoIterator(GetInstance()); }
ChildInfoIterator end(void) { return ChildInfoIterator(GetInstance(), ChildInfoIterator::kEndIterator); }
};
#endif
static Key KeyForDatasetType(MeshCoP::Dataset::Type aType);
Error ReadEntry(Key aKey, void *aValue, uint16_t aMaxLength) const;
Error SaveEntry(Key aKey, const void *aValue, void *aPrev, uint16_t aLength);
Error DeleteEntry(Key aKey);
static void Log(Action aAction, Error aError, Key aKey, const void *aValue = nullptr);
static const uint16_t kSensitiveKeys[];
};
} // namespace ot
#endif // SETTINGS_HPP_