Truncate map and area names (#35127)

* Updated the setting of the area and map names so that if the name given is greater than the buffer size, it's truncated rater to set to empty.

* Restyled by clang-format

---------

Co-authored-by: Restyled.io <commits@restyled.io>

Author: hicklin

src/app/clusters/service-area-server/service-area-cluster-objects.h

@@ -109,12 +109,14 @@ struct AreaStructureWrapper : public chip::app::Clusters::ServiceArea::Structs::
                                            const DataModel::Nullable<Globals::AreaTypeTag> & areaType)
     {
         areaDesc.locationInfo.SetNonNull();
-        // Copy the name
-        auto areaNameSpan = MutableCharSpan(mAreaNameBuffer, kAreaNameMaxSize);
-        CopyCharSpanToMutableCharSpan(locationName, areaNameSpan);
-        areaDesc.locationInfo.Value().locationName = CharSpan(areaNameSpan.data(), areaNameSpan.size());
-        areaDesc.locationInfo.Value().floorNumber  = floorNumber;
-        areaDesc.locationInfo.Value().areaType     = areaType;
+
+        // Copy the name. If the name is larger than kAreaNameMaxSize, truncate it to fit.
+        auto sizeToCopy = std::min(kAreaNameMaxSize, locationName.size());
+        memcpy(mAreaNameBuffer, locationName.data(), sizeToCopy);
+        areaDesc.locationInfo.Value().locationName = CharSpan(mAreaNameBuffer, sizeToCopy);
+
+        areaDesc.locationInfo.Value().floorNumber = floorNumber;
+        areaDesc.locationInfo.Value().areaType    = areaType;
 
         return *this;
     }
@@ -320,10 +322,11 @@ struct MapStructureWrapper : public chip::app::Clusters::ServiceArea::Structs::M
      */
     void Set(uint32_t aMapId, const CharSpan & aMapName)
     {
-        mapID            = aMapId;
-        auto mapNameSpan = MutableCharSpan(mMapNameBuffer, kMapNameMaxSize);
-        CopyCharSpanToMutableCharSpan(aMapName, mapNameSpan);
-        name = CharSpan(mapNameSpan.data(), mapNameSpan.size());
+        mapID = aMapId;
+        // Copy the name. If the name is larger than kMapNameMaxSize, truncate it to fit.
+        auto sizeToCopy = std::min(kMapNameMaxSize, aMapName.size());
+        memcpy(mMapNameBuffer, aMapName.data(), sizeToCopy);
+        name = CharSpan(mMapNameBuffer, sizeToCopy);
     }
 
     /**