diff options
Diffstat (limited to 'third_party/libwebrtc/net/dcsctp/packet/error_cause/protocol_violation_cause.cc')
-rw-r--r-- | third_party/libwebrtc/net/dcsctp/packet/error_cause/protocol_violation_cause.cc | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/error_cause/protocol_violation_cause.cc b/third_party/libwebrtc/net/dcsctp/packet/error_cause/protocol_violation_cause.cc new file mode 100644 index 0000000000..1b8d423afb --- /dev/null +++ b/third_party/libwebrtc/net/dcsctp/packet/error_cause/protocol_violation_cause.cc @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ +#include "net/dcsctp/packet/error_cause/protocol_violation_cause.h" + +#include <stdint.h> + +#include <string> +#include <type_traits> +#include <vector> + +#include "absl/types/optional.h" +#include "api/array_view.h" +#include "net/dcsctp/packet/bounded_byte_reader.h" +#include "net/dcsctp/packet/bounded_byte_writer.h" +#include "net/dcsctp/packet/tlv_trait.h" +#include "rtc_base/strings/string_builder.h" + +namespace dcsctp { + +// https://tools.ietf.org/html/rfc4960#section-3.3.10.13 + +// 0 1 2 3 +// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +// | Cause Code=13 | Cause Length=Variable | +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +// / Additional Information / +// \ \ +// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +constexpr int ProtocolViolationCause::kType; + +absl::optional<ProtocolViolationCause> ProtocolViolationCause::Parse( + rtc::ArrayView<const uint8_t> data) { + absl::optional<BoundedByteReader<kHeaderSize>> reader = ParseTLV(data); + if (!reader.has_value()) { + return absl::nullopt; + } + return ProtocolViolationCause( + std::string(reinterpret_cast<const char*>(reader->variable_data().data()), + reader->variable_data().size())); +} + +void ProtocolViolationCause::SerializeTo(std::vector<uint8_t>& out) const { + BoundedByteWriter<kHeaderSize> writer = + AllocateTLV(out, additional_information_.size()); + writer.CopyToVariableData(rtc::MakeArrayView( + reinterpret_cast<const uint8_t*>(additional_information_.data()), + additional_information_.size())); +} + +std::string ProtocolViolationCause::ToString() const { + rtc::StringBuilder sb; + sb << "Protocol Violation, additional_information=" + << additional_information_; + return sb.Release(); +} + +} // namespace dcsctp |