1 // Copyright 2022 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 15 // clang-format off 16 #include "pw_rpc/internal/log_config.h" // PW_LOG_* macros must be first. 17 18 #include "pw_rpc/packet_meta.h" 19 // clang-format on 20 21 #include "pw_log/log.h" 22 #include "pw_rpc/channel.h" 23 #include "pw_rpc/internal/packet.h" 24 #include "pw_span/span.h" 25 #include "pw_status/status_with_size.h" 26 27 namespace pw::rpc { 28 FromBuffer(ConstByteSpan data)29Result<PacketMeta> PacketMeta::FromBuffer(ConstByteSpan data) { 30 PW_TRY_ASSIGN(internal::Packet packet, internal::Packet::FromBuffer(data)); 31 if (packet.channel_id() == Channel::kUnassignedChannelId || 32 packet.service_id() == 0 || packet.method_id() == 0) { 33 PW_LOG_WARN("Received malformed pw_rpc packet"); 34 return Status::DataLoss(); 35 } 36 return PacketMeta(packet); 37 } 38 39 } // namespace pw::rpc 40