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Removed the fabric_list completely from scene table, change scene tab…
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…le to now store transition time in ms, added security on array compression and dissociated handler number from cluster number
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@lpbeliveau-silabs @pull
lpbeliveau-silabs authored and pull[bot] committed Jan 29, 2024
1 parent 4c51bb5 commit e1859e2
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Showing 6 changed files with 49 additions and 313 deletions.
10 changes: 6 additions & 4 deletions src/app/clusters/scenes/ExtensionFieldSetsImpl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -121,15 +121,17 @@ CHIP_ERROR ExtensionFieldSetsImpl::GetFieldSetAtPosition(ExtensionFieldSet & fie

CHIP_ERROR ExtensionFieldSetsImpl::RemoveFieldAtPosition(uint8_t position)
{
VerifyOrReturnError(position < kMaxClusterPerScenes, CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnValue(!this->IsEmpty() && !mEFS[position].IsEmpty(), CHIP_NO_ERROR);
VerifyOrReturnValue(position < mFieldSetsCount, CHIP_NO_ERROR);

uint8_t nextPos = static_cast<uint8_t>(position + 1);
uint8_t moveNum = static_cast<uint8_t>(kMaxClusterPerScenes - nextPos);

// TODO: Implement general array management methods
// Compress array after removal
memmove(&mEFS[position], &mEFS[nextPos], sizeof(ExtensionFieldSet) * moveNum);
// Compress array after removal, if the removed position is not the last
if (moveNum)
{
memmove(&mEFS[position], &mEFS[nextPos], sizeof(ExtensionFieldSet) * moveNum);
}

mFieldSetsCount--;
// Clear last occupied position
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37 changes: 14 additions & 23 deletions src/app/clusters/scenes/SceneTable.h
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@
#include <app/clusters/scenes/ExtensionFieldSets.h>
#include <lib/support/CHIPMemString.h>
#include <lib/support/CommonIterator.h>
#include <lib/support/CommonPersistentData.h>
#include <lib/support/PersistentData.h>
#include <lib/support/Span.h>

namespace chip {
Expand All @@ -30,8 +30,7 @@ namespace scenes {
typedef uint8_t SceneIndex;

typedef uint32_t TransitionTimeMs;
typedef uint16_t SceneTransitionTime;
typedef uint8_t TransitionTime100ms;
typedef uint32_t SceneTransitionTime;

constexpr GroupId kGlobalGroupSceneId = 0x0000;
constexpr SceneIndex kUndefinedSceneIndex = 0xff;
Expand All @@ -42,7 +41,7 @@ static constexpr size_t kSceneNameMax = CHIP_CONFIG_SCENES_CLUSTER_MAXIMUM

// Handler's are meant to retrieve a single cluster's extension field set, therefore the maximum number allowed is the maximal
// number of extension field set.
static constexpr uint8_t kMaxSceneHandlers = CHIP_CONFIG_SCENES_MAX_CLUSTERS_PER_SCENE;
static constexpr uint8_t kMaxSceneHandlers = CHIP_CONFIG_SCENES_MAX_SCENE_HANDLERS;

/// @brief Abstract class allowing different Endpoints interactions with the ExtensionFieldSets added to and retrieved from the
/// scene Table. The Scene Handler's are meant as interface between various clusters and the Scene table. The expected behaviour of
Expand Down Expand Up @@ -156,27 +155,22 @@ class SceneTable
/// mSceneTransitionTimeSeconds in enhanced scene commands
struct SceneData
{
char mName[kSceneNameMax] = { 0 };
size_t mNameLength = 0;
SceneTransitionTime mSceneTransitionTimeSeconds = 0;
char mName[kSceneNameMax] = { 0 };
size_t mNameLength = 0;
SceneTransitionTime mSceneTransitionTimeMs = 0;
EFStype mExtensionFieldSets;
TransitionTime100ms mTransitionTime100ms = 0;

SceneData(const CharSpan & sceneName = CharSpan(), SceneTransitionTime time = 0, TransitionTime100ms time100ms = 0) :
mSceneTransitionTimeSeconds(time), mTransitionTime100ms(time100ms)
SceneData(const CharSpan & sceneName = CharSpan(), SceneTransitionTime time = 0) : mSceneTransitionTimeMs(time)
{
this->SetName(sceneName);
}
SceneData(EFStype fields, const CharSpan & sceneName = CharSpan(), SceneTransitionTime time = 0,
TransitionTime100ms time100ms = 0) :
mSceneTransitionTimeSeconds(time),
mTransitionTime100ms(time100ms)
SceneData(EFStype fields, const CharSpan & sceneName = CharSpan(), SceneTransitionTime time = 0) :
mSceneTransitionTimeMs(time)
{
this->SetName(sceneName);
mExtensionFieldSets = fields;
}
SceneData(const SceneData & other) :
mSceneTransitionTimeSeconds(other.mSceneTransitionTimeSeconds), mTransitionTime100ms(other.mTransitionTime100ms)
SceneData(const SceneData & other) : mSceneTransitionTimeMs(other.mSceneTransitionTimeMs)
{
this->SetName(CharSpan(other.mName, other.mNameLength));
mExtensionFieldSets = other.mExtensionFieldSets;
Expand All @@ -201,25 +195,22 @@ class SceneTable
void Clear()
{
this->SetName(CharSpan());
mSceneTransitionTimeSeconds = 0;
mTransitionTime100ms = 0;
mSceneTransitionTimeMs = 0;
mExtensionFieldSets.Clear();
}

bool operator==(const SceneData & other)
{
return (this->mNameLength == other.mNameLength && !memcmp(this->mName, other.mName, this->mNameLength) &&
(this->mSceneTransitionTimeSeconds == other.mSceneTransitionTimeSeconds) &&
(this->mTransitionTime100ms == other.mTransitionTime100ms) &&
(this->mSceneTransitionTimeMs == other.mSceneTransitionTimeMs) &&
(this->mExtensionFieldSets == other.mExtensionFieldSets));
}

void operator=(const SceneData & other)
{
this->SetName(CharSpan(other.mName, other.mNameLength));
this->mExtensionFieldSets = other.mExtensionFieldSets;
this->mSceneTransitionTimeSeconds = other.mSceneTransitionTimeSeconds;
this->mTransitionTime100ms = other.mTransitionTime100ms;
this->mExtensionFieldSets = other.mExtensionFieldSets;
this->mSceneTransitionTimeMs = other.mSceneTransitionTimeMs;
}
};

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129 changes: 10 additions & 119 deletions src/app/clusters/scenes/SceneTableImpl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -28,24 +28,12 @@ namespace scenes {
enum class TagSceneImpl : uint8_t
{
kSceneCount = 1,
kNextFabric,
};

using SceneTableEntry = DefaultSceneTableImpl::SceneTableEntry;
using SceneStorageId = DefaultSceneTableImpl::SceneStorageId;
using SceneData = DefaultSceneTableImpl::SceneData;

struct FabricHavingSceneList : public CommonPersistentData::FabricList
{
// This implementation uses the same key as the GroupFabricList from GroupDataProviderImpl to avoid duplicating the list in
// memory. If a different GroupDataProvider implementation is used, it will create the list in flash memory.
CHIP_ERROR UpdateKey(StorageKeyName & key) override
{
key = DefaultStorageKeyAllocator::GroupFabricList();
return CHIP_NO_ERROR;
}
};

// Worst case tested: Add Scene Command with EFS using the default SerializeAdd Method. This yielded a serialized scene of 212bytes
// when using the OnOff, Level Control and Color Control as well as the maximal name length of 16 bytes. Putting 256 gives some
// slack in case different clusters are used. Value obtained by using writer.GetLengthWritten at the end of the SceneTableData
Expand Down Expand Up @@ -93,8 +81,7 @@ struct SceneTableData : public SceneTableEntry, PersistentData<kPersistentSceneB
ReturnErrorOnFailure(writer.PutString(TLV::ContextTag(TagScene::kName), nameSpan));
}

ReturnErrorOnFailure(writer.Put(TLV::ContextTag(TagScene::kTransitionTime), mStorageData.mSceneTransitionTimeSeconds));
ReturnErrorOnFailure(writer.Put(TLV::ContextTag(TagScene::kTransitionTime100), mStorageData.mTransitionTime100ms));
ReturnErrorOnFailure(writer.Put(TLV::ContextTag(TagScene::kTransitionTimeMs), mStorageData.mSceneTransitionTimeMs));
ReturnErrorOnFailure(mStorageData.mExtensionFieldSets.Serialize(writer));

return writer.EndContainer(container);
Expand Down Expand Up @@ -122,20 +109,18 @@ struct SceneTableData : public SceneTableEntry, PersistentData<kPersistentSceneB
// Scene Data
ReturnErrorOnFailure(reader.Next());
TLV::Tag currTag = reader.GetTag();
VerifyOrReturnError(TLV::ContextTag(TagScene::kName) == currTag || TLV::ContextTag(TagScene::kTransitionTime) == currTag,
VerifyOrReturnError(TLV::ContextTag(TagScene::kName) == currTag || TLV::ContextTag(TagScene::kTransitionTimeMs) == currTag,
CHIP_ERROR_WRONG_TLV_TYPE);

// A name may or may not have been stored. Check whether it was.
if (currTag == TLV::ContextTag(TagScene::kName))
{
ReturnErrorOnFailure(reader.Get(nameSpan));
mStorageData.SetName(nameSpan);
ReturnErrorOnFailure(reader.Next(TLV::ContextTag(TagScene::kTransitionTime)));
ReturnErrorOnFailure(reader.Next(TLV::ContextTag(TagScene::kTransitionTimeMs)));
}

ReturnErrorOnFailure(reader.Get(mStorageData.mSceneTransitionTimeSeconds));
ReturnErrorOnFailure(reader.Next(TLV::ContextTag(TagScene::kTransitionTime100)));
ReturnErrorOnFailure(reader.Get(mStorageData.mTransitionTime100ms));
ReturnErrorOnFailure(reader.Get(mStorageData.mSceneTransitionTimeMs));
ReturnErrorOnFailure(mStorageData.mExtensionFieldSets.Deserialize(reader));

return reader.ExitContainer(container);
Expand All @@ -156,7 +141,6 @@ struct FabricSceneData : public PersistentData<kPersistentFabricBufferMax>
FabricIndex fabric_index = kUndefinedFabricIndex;
uint8_t scene_count = 0;
SceneStorageId scene_map[kMaxScenePerFabric];
FabricIndex next = kUndefinedFabricIndex;

FabricSceneData() = default;
FabricSceneData(FabricIndex fabric) : fabric_index(fabric) {}
Expand All @@ -175,7 +159,6 @@ struct FabricSceneData : public PersistentData<kPersistentFabricBufferMax>
{
scene_map[i].Clear();
}
next = kUndefinedFabricIndex;
}

CHIP_ERROR Serialize(TLV::TLVWriter & writer) const override
Expand All @@ -184,7 +167,6 @@ struct FabricSceneData : public PersistentData<kPersistentFabricBufferMax>
ReturnErrorOnFailure(writer.StartContainer(TLV::AnonymousTag(), TLV::kTLVType_Structure, container));

ReturnErrorOnFailure(writer.Put(TLV::ContextTag(TagSceneImpl::kSceneCount), (scene_count)));
ReturnErrorOnFailure(writer.Put(TLV::ContextTag(TagSceneImpl::kNextFabric), (next)));
// Storing the scene map
for (uint8_t i = 0; i < kMaxScenePerFabric; i++)
{
Expand All @@ -205,8 +187,6 @@ struct FabricSceneData : public PersistentData<kPersistentFabricBufferMax>

ReturnErrorOnFailure(reader.Next(TLV::ContextTag(TagSceneImpl::kSceneCount)));
ReturnErrorOnFailure(reader.Get(scene_count));
ReturnErrorOnFailure(reader.Next(TLV::ContextTag(TagSceneImpl::kNextFabric)));
ReturnErrorOnFailure(reader.Get(next));

uint8_t i = 0;
while (reader.Next(TLV::ContextTag(TagScene::kEndpointID)) != CHIP_END_OF_TLV)
Expand All @@ -223,86 +203,6 @@ struct FabricSceneData : public PersistentData<kPersistentFabricBufferMax>
return reader.ExitContainer(container);
}

// Register the fabric in the list of fabrics having scenes
CHIP_ERROR Register(PersistentStorageDelegate * storage)
{
FabricHavingSceneList fabric_list;
CHIP_ERROR err = fabric_list.Load(storage);
if (CHIP_ERROR_NOT_FOUND == err)
{
// New fabric list
fabric_list.first_entry = fabric_index;
fabric_list.entry_count = 1;
return fabric_list.Save(storage);
}
ReturnErrorOnFailure(err);

// Existing fabric list, search for existing entry
FabricSceneData fabric(fabric_list.first_entry);
for (size_t i = 0; i < fabric_list.entry_count; i++)
{
err = fabric.Load(storage);
if (CHIP_NO_ERROR != err)
{
break;
}
if (fabric.fabric_index == this->fabric_index)
{
// Fabric already registered
return CHIP_NO_ERROR;
}
fabric.fabric_index = fabric.next;
}
// Add this fabric to the fabric list
this->next = fabric_list.first_entry;
fabric_list.first_entry = this->fabric_index;
fabric_list.entry_count++;
return fabric_list.Save(storage);
}

// Remove the fabric from the fabrics' linked list
CHIP_ERROR Unregister(PersistentStorageDelegate * storage) const
{
FabricHavingSceneList fabric_list;
CHIP_ERROR err = fabric_list.Load(storage);
VerifyOrReturnValue(CHIP_ERROR_NOT_FOUND != err, CHIP_NO_ERROR);
ReturnErrorOnFailure(err);

// Existing fabric list, search for existing entry
FabricSceneData fabric(fabric_list.first_entry);
FabricSceneData prev;

for (size_t i = 0; i < fabric_list.entry_count; i++)
{
err = fabric.Load(storage);
if (CHIP_NO_ERROR != err)
{
break;
}
if (fabric.fabric_index == this->fabric_index)
{
// Fabric found
if (i == 0)
{
// Remove first fabric
fabric_list.first_entry = this->next;
}
else
{
// Remove intermediate fabric
prev.next = this->next;
ReturnErrorOnFailure(prev.Save(storage));
}
VerifyOrReturnError(fabric_list.entry_count > 0, CHIP_ERROR_INTERNAL);
fabric_list.entry_count--;
return fabric_list.Save(storage);
}
prev = fabric;
fabric.fabric_index = fabric.next;
}
// Fabric not in the list
return CHIP_ERROR_NOT_FOUND;
}
/// @brief Finds the index where to insert current scene by going through the whole table and looking if the scene is already in
/// there. If the target is not in the table, sets idx to the first empty space
/// @param target_scene Storage Id of scene to store
Expand Down Expand Up @@ -336,17 +236,6 @@ struct FabricSceneData : public PersistentData<kPersistentFabricBufferMax>

return CHIP_ERROR_NO_MEMORY;
}
CHIP_ERROR Save(PersistentStorageDelegate * storage) override
{
ReturnErrorOnFailure(Register(storage));
return PersistentData::Save(storage);
}

CHIP_ERROR Delete(PersistentStorageDelegate * storage) override
{
ReturnErrorOnFailure(Unregister(storage));
return PersistentData::Delete(storage);
}

CHIP_ERROR SaveScene(PersistentStorageDelegate * storage, const SceneTableEntry & entry)
{
Expand Down Expand Up @@ -538,7 +427,10 @@ CHIP_ERROR DefaultSceneTableImpl::UnregisterHandler(SceneHandler * handler)

// TODO: Implement general array management methods
// Compress array after removal
memmove(&this->mHandlers[position], &this->mHandlers[nextPos], sizeof(this->mHandlers[position]) * moveNum);
if (moveNum)
{
memmove(&this->mHandlers[position], &this->mHandlers[nextPos], sizeof(this->mHandlers[position]) * moveNum);
}

this->mNumHandlers--;
// Clear last occupied position
Expand Down Expand Up @@ -602,9 +494,8 @@ CHIP_ERROR DefaultSceneTableImpl::SceneApplyEFS(FabricIndex fabric_index, const
for (uint8_t i = 0; i < scene.mStorageData.mExtensionFieldSets.GetFieldSetCount(); i++)
{
scene.mStorageData.mExtensionFieldSets.GetFieldSetAtPosition(EFS, i);
cluster = EFS.mID;
time = scene.mStorageData.mSceneTransitionTimeSeconds * 1000 +
(scene.mStorageData.mTransitionTime100ms ? scene.mStorageData.mTransitionTime100ms * 10 : 0);
cluster = EFS.mID;
time = scene.mStorageData.mSceneTransitionTimeMs;
ByteSpan EFSSpan = MutableByteSpan(EFS.mBytesBuffer, EFS.mUsedBytes);

if (!EFS.IsEmpty())
Expand Down
6 changes: 2 additions & 4 deletions src/app/clusters/scenes/SceneTableImpl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -31,16 +31,14 @@ namespace scenes {
/// kGroupID: Tag for GroupID if the Scene is a Group Scene
/// kID: Tag for the scene ID together with the two previous tag, forms the SceneStorageID
/// kName: Tag for the name of the scene
/// kTransitionTime: Tag for the transition time of the scene in seconds
/// kTransitionTime100: Tag for the transition time of the scene in tenth of a second (enhanced scenes)
/// kTransitionTime: Tag for the transition time of the scene in miliseconds
enum class TagScene : uint8_t
{
kEndpointID = 1,
kGroupID,
kID,
kName,
kTransitionTime,
kTransitionTime100,
kTransitionTimeMs,
};

using clusterId = chip::ClusterId;
Expand Down
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