1 files changed, 85 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/chunk/chunk.cc b/third_party/libwebrtc/net/dcsctp/packet/chunk/chunk.cc
new file mode 100644
index 0000000000..832ab82288
--- /dev/null
+++ b/third_party/libwebrtc/net/dcsctp/packet/chunk/chunk.cc
@@ -0,0 +1,85 @@
+/*
+ *  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/chunk/chunk.h"
+
+#include <cstdint>
+#include <memory>
+#include <utility>
+
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "net/dcsctp/common/math.h"
+#include "net/dcsctp/packet/chunk/abort_chunk.h"
+#include "net/dcsctp/packet/chunk/cookie_ack_chunk.h"
+#include "net/dcsctp/packet/chunk/cookie_echo_chunk.h"
+#include "net/dcsctp/packet/chunk/data_chunk.h"
+#include "net/dcsctp/packet/chunk/error_chunk.h"
+#include "net/dcsctp/packet/chunk/forward_tsn_chunk.h"
+#include "net/dcsctp/packet/chunk/heartbeat_ack_chunk.h"
+#include "net/dcsctp/packet/chunk/heartbeat_request_chunk.h"
+#include "net/dcsctp/packet/chunk/idata_chunk.h"
+#include "net/dcsctp/packet/chunk/iforward_tsn_chunk.h"
+#include "net/dcsctp/packet/chunk/init_ack_chunk.h"
+#include "net/dcsctp/packet/chunk/init_chunk.h"
+#include "net/dcsctp/packet/chunk/reconfig_chunk.h"
+#include "net/dcsctp/packet/chunk/sack_chunk.h"
+#include "net/dcsctp/packet/chunk/shutdown_ack_chunk.h"
+#include "net/dcsctp/packet/chunk/shutdown_chunk.h"
+#include "net/dcsctp/packet/chunk/shutdown_complete_chunk.h"
+#include "net/dcsctp/packet/tlv_trait.h"
+
+namespace dcsctp {
+
+template <class Chunk>
+bool ParseAndPrint(uint8_t chunk_type,
+                   rtc::ArrayView<const uint8_t> data,
+                   rtc::StringBuilder& sb) {
+  if (chunk_type == Chunk::kType) {
+    absl::optional<Chunk> c = Chunk::Parse(data);
+    if (c.has_value()) {
+      sb << c->ToString();
+    } else {
+      sb << "Failed to parse chunk of type " << chunk_type;
+    }
+    return true;
+  }
+  return false;
+}
+
+std::string DebugConvertChunkToString(rtc::ArrayView<const uint8_t> data) {
+  rtc::StringBuilder sb;
+
+  if (data.empty()) {
+    sb << "Failed to parse chunk due to empty data";
+  } else {
+    uint8_t chunk_type = data[0];
+    if (!ParseAndPrint<DataChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<InitChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<InitAckChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<SackChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<HeartbeatRequestChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<HeartbeatAckChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<AbortChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<ErrorChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<CookieEchoChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<CookieAckChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<ShutdownChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<ShutdownAckChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<ShutdownCompleteChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<ReConfigChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<ForwardTsnChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<IDataChunk>(chunk_type, data, sb) &&
+        !ParseAndPrint<IForwardTsnChunk>(chunk_type, data, sb)) {
+      sb << "Unhandled chunk type: " << static_cast<int>(chunk_type);
+    }
+  }
+  return sb.Release();
+}
+}  // namespace dcsctp