| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "src/tracing/core/packet_stream_validator.h" |
| |
| #include <inttypes.h> |
| #include <stddef.h> |
| |
| #include "perfetto/base/logging.h" |
| #include "perfetto/protozero/proto_utils.h" |
| #include "perfetto/trace/trace_packet.pb.h" |
| #include "perfetto/trace/trusted_packet.pb.h" |
| |
| namespace perfetto { |
| |
| // static |
| bool PacketStreamValidator::Validate(const Slices& slices) { |
| static_assert(protos::TracePacket::kTrustedUidFieldNumber == |
| protos::TrustedPacket::kTrustedUidFieldNumber, |
| "trusted uid field id mismatch"); |
| SlicedProtobufInputStream stream(&slices); |
| size_t size = 0; |
| for (const Slice& slice : slices) |
| size += slice.size; |
| |
| protos::TrustedPacket packet; |
| if (!packet.ParseFromBoundedZeroCopyStream(&stream, size)) |
| return false; |
| // Only the service is allowed to fill in the trusted uid. |
| return packet.optional_trusted_uid_case() == |
| protos::TrustedPacket::OPTIONAL_TRUSTED_UID_NOT_SET; |
| } |
| |
| } // namespace perfetto |