1 files changed, 83 insertions, 0 deletions
diff --git a/third_party/libwebrtc/net/dcsctp/packet/error_cause/error_cause.cc b/third_party/libwebrtc/net/dcsctp/packet/error_cause/error_cause.cc
new file mode 100644
index 0000000000..dcd07472ed
--- /dev/null
+++ b/third_party/libwebrtc/net/dcsctp/packet/error_cause/error_cause.cc
@@ -0,0 +1,83 @@
+/*
+ *  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/error_cause.h"
+
+#include <stddef.h>
+
+#include <cstdint>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "net/dcsctp/common/math.h"
+#include "net/dcsctp/packet/error_cause/cookie_received_while_shutting_down_cause.h"
+#include "net/dcsctp/packet/error_cause/invalid_mandatory_parameter_cause.h"
+#include "net/dcsctp/packet/error_cause/invalid_stream_identifier_cause.h"
+#include "net/dcsctp/packet/error_cause/missing_mandatory_parameter_cause.h"
+#include "net/dcsctp/packet/error_cause/no_user_data_cause.h"
+#include "net/dcsctp/packet/error_cause/out_of_resource_error_cause.h"
+#include "net/dcsctp/packet/error_cause/protocol_violation_cause.h"
+#include "net/dcsctp/packet/error_cause/restart_of_an_association_with_new_address_cause.h"
+#include "net/dcsctp/packet/error_cause/stale_cookie_error_cause.h"
+#include "net/dcsctp/packet/error_cause/unrecognized_chunk_type_cause.h"
+#include "net/dcsctp/packet/error_cause/unrecognized_parameter_cause.h"
+#include "net/dcsctp/packet/error_cause/unresolvable_address_cause.h"
+#include "net/dcsctp/packet/error_cause/user_initiated_abort_cause.h"
+#include "rtc_base/strings/string_builder.h"
+
+namespace dcsctp {
+
+template <class ErrorCause>
+bool ParseAndPrint(ParameterDescriptor descriptor, rtc::StringBuilder& sb) {
+  if (descriptor.type == ErrorCause::kType) {
+    absl::optional<ErrorCause> p = ErrorCause::Parse(descriptor.data);
+    if (p.has_value()) {
+      sb << p->ToString();
+    } else {
+      sb << "Failed to parse error cause of type " << ErrorCause::kType;
+    }
+    return true;
+  }
+  return false;
+}
+
+std::string ErrorCausesToString(const Parameters& parameters) {
+  rtc::StringBuilder sb;
+
+  std::vector<ParameterDescriptor> descriptors = parameters.descriptors();
+  for (size_t i = 0; i < descriptors.size(); ++i) {
+    if (i > 0) {
+      sb << "\n";
+    }
+
+    const ParameterDescriptor& d = descriptors[i];
+    if (!ParseAndPrint<InvalidStreamIdentifierCause>(d, sb) &&
+        !ParseAndPrint<MissingMandatoryParameterCause>(d, sb) &&
+        !ParseAndPrint<StaleCookieErrorCause>(d, sb) &&
+        !ParseAndPrint<OutOfResourceErrorCause>(d, sb) &&
+        !ParseAndPrint<UnresolvableAddressCause>(d, sb) &&
+        !ParseAndPrint<UnrecognizedChunkTypeCause>(d, sb) &&
+        !ParseAndPrint<InvalidMandatoryParameterCause>(d, sb) &&
+        !ParseAndPrint<UnrecognizedParametersCause>(d, sb) &&
+        !ParseAndPrint<NoUserDataCause>(d, sb) &&
+        !ParseAndPrint<CookieReceivedWhileShuttingDownCause>(d, sb) &&
+        !ParseAndPrint<RestartOfAnAssociationWithNewAddressesCause>(d, sb) &&
+        !ParseAndPrint<UserInitiatedAbortCause>(d, sb) &&
+        !ParseAndPrint<ProtocolViolationCause>(d, sb)) {
+      sb << "Unhandled parameter of type: " << d.type;
+    }
+  }
+
+  return sb.Release();
+}
+}  // namespace dcsctp