// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/domain_reliability/quic_error_mapping.h"

namespace domain_reliability {

namespace {

const struct QuicErrorMapping {
  net::QuicErrorCode quic_error;
  const char* beacon_quic_error;
} kQuicErrorMap[] = {
  // Connection has reached an invalid state.
  { net::QUIC_INTERNAL_ERROR, "quic.internal_error" },
  // There were data frames after the a fin or reset.
  { net::QUIC_STREAM_DATA_AFTER_TERMINATION,
   "quic.stream_data.after_termination" },
  // Control frame is malformed.
  { net::QUIC_INVALID_PACKET_HEADER, "quic.invalid.packet_header" },
  // Frame data is malformed.
  { net::QUIC_INVALID_FRAME_DATA, "quic.invalid_frame_data" },
  // The packet contained no payload.
  { net::QUIC_MISSING_PAYLOAD, "quic.missing.payload" },
  // FEC data is malformed.
  { net::QUIC_INVALID_FEC_DATA, "quic.invalid.fec_data" },
  // STREAM frame data is malformed.
  { net::QUIC_INVALID_STREAM_DATA, "quic.invalid.stream_data" },
  // STREAM frame data is not encrypted.
  { net::QUIC_UNENCRYPTED_STREAM_DATA, "quic.unencrypted.stream_data" },
  // Attempt to send unencrypted STREAM frame.
  { net::QUIC_ATTEMPT_TO_SEND_UNENCRYPTED_STREAM_DATA,
    "quic.attempt.to.unencrypted.stream.data" },
  // Received a frame which is likely the result of memory corruption.
  { net::QUIC_MAYBE_CORRUPTED_MEMORY, "quic.maybe.corrupted.momery" },
  // FEC frame data is not encrypted.
  { net::QUIC_UNENCRYPTED_FEC_DATA, "quic.unencrypted.fec.data" },
  // RST_STREAM frame data is malformed.
  { net::QUIC_INVALID_RST_STREAM_DATA, "quic.invalid.rst_stream_data" },
  // CONNECTION_CLOSE frame data is malformed.
  { net::QUIC_INVALID_CONNECTION_CLOSE_DATA,
   "quic.invalid.connection_close_data" },
  // GOAWAY frame data is malformed.
  { net::QUIC_INVALID_GOAWAY_DATA, "quic.invalid.goaway_data" },
  // WINDOW_UPDATE frame data is malformed.
  { net::QUIC_INVALID_WINDOW_UPDATE_DATA, "quic.invalid.window_update_data" },
  // BLOCKED frame data is malformed.
  { net::QUIC_INVALID_BLOCKED_DATA, "quic.invalid.blocked_data" },
  // STOP_WAITING frame data is malformed.
  { net::QUIC_INVALID_STOP_WAITING_DATA, "quic.invalid.stop_waiting_data" },
  // PATH_CLOSE frame data is malformed.
  { net::QUIC_INVALID_PATH_CLOSE_DATA, "quic.invalid_path_close_data" },
  // ACK frame data is malformed.
  { net::QUIC_INVALID_ACK_DATA, "quic.invalid.ack_data" },

  // Version negotiation packet is malformed.
  { net::QUIC_INVALID_VERSION_NEGOTIATION_PACKET,
   "quic_invalid_version_negotiation_packet" },
  // Public RST packet is malformed.
  { net::QUIC_INVALID_PUBLIC_RST_PACKET, "quic.invalid.public_rst_packet" },

  // There was an error decrypting.
  { net::QUIC_DECRYPTION_FAILURE, "quic.decryption.failure" },
  // There was an error encrypting.
  { net::QUIC_ENCRYPTION_FAILURE, "quic.encryption.failure" },
  // The packet exceeded kMaxPacketSize.
  { net::QUIC_PACKET_TOO_LARGE, "quic.packet.too_large" },
  // The peer is going away.  May be a client or server.
  { net::QUIC_PEER_GOING_AWAY, "quic.peer_going_away" },
  // A stream ID was invalid.
  { net::QUIC_INVALID_STREAM_ID, "quic.invalid_stream_id" },
  // A priority was invalid.
  { net::QUIC_INVALID_PRIORITY, "quic.invalid_priority" },
  // Too many streams already open.
  { net::QUIC_TOO_MANY_OPEN_STREAMS, "quic.too_many_open_streams" },
  // The peer created too many available streams.
  { net::QUIC_TOO_MANY_AVAILABLE_STREAMS, "quic.too_many_available_streams" },
  // Received public reset for this connection.
  { net::QUIC_PUBLIC_RESET, "quic.public_reset" },
  // Invalid protocol version.
  { net::QUIC_INVALID_VERSION, "quic.invalid_version" },

  // The Header ID for a stream was too far from the previous.
  { net::QUIC_INVALID_HEADER_ID, "quic.invalid_header_id" },
  // Negotiable parameter received during handshake had invalid value.
  { net::QUIC_INVALID_NEGOTIATED_VALUE, "quic.invalid_negotiated_value" },
  // There was an error decompressing data.
  { net::QUIC_DECOMPRESSION_FAILURE, "quic.decompression_failure" },
  // We hit our prenegotiated (or default) timeout
  { net::QUIC_NETWORK_IDLE_TIMEOUT, "quic.connection.idle_time_out" },
  // We hit our overall connection timeout
  { net::QUIC_HANDSHAKE_TIMEOUT,
   "quic.connection.handshake_timed_out" },
  // There was an error encountered migrating addresses.
  { net::QUIC_ERROR_MIGRATING_ADDRESS, "quic.error_migrating_address" },
  // There was an error encountered migrating port only.
  { net::QUIC_ERROR_MIGRATING_PORT, "quic.error_migrating_port" },
  // There was an error while writing to the socket.
  { net::QUIC_PACKET_WRITE_ERROR, "quic.packet.write_error" },
  // There was an error while reading from the socket.
  { net::QUIC_PACKET_READ_ERROR, "quic.packet.read_error" },
  // We received a STREAM_FRAME with no data and no fin flag set.
  { net::QUIC_EMPTY_STREAM_FRAME_NO_FIN, "quic.empty_stream_frame_no_fin" },
  // We received invalid data on the headers stream.
  { net::QUIC_INVALID_HEADERS_STREAM_DATA, "quic.invalid_headers_stream_data" },
  // The peer received too much data, violating flow control.
  { net::QUIC_FLOW_CONTROL_RECEIVED_TOO_MUCH_DATA,
   "quic.flow_control.received_too_much_data" },
  // The peer sent too much data, violating flow control.
  { net::QUIC_FLOW_CONTROL_SENT_TOO_MUCH_DATA,
   "quic.flow_control.sent_too_much_data" },
  // The peer received an invalid flow control window.
  { net::QUIC_FLOW_CONTROL_INVALID_WINDOW, "quic.flow_control.invalid_window" },
  // The connection has been IP pooled into an existing connection.
  { net::QUIC_CONNECTION_IP_POOLED, "quic.connection.ip_pooled" },
  // The connection has too many outstanding sent packets.
  { net::QUIC_TOO_MANY_OUTSTANDING_SENT_PACKETS,
   "quic.too_many_outstanding_sent_packets" },
  // The connection has too many outstanding received packets.
  { net::QUIC_TOO_MANY_OUTSTANDING_RECEIVED_PACKETS,
   "quic.too_many_outstanding_received_packets" },
  // The quic connection job to load server config is cancelled.
  { net::QUIC_CONNECTION_CANCELLED, "quic.connection.cancelled" },
  // Disabled QUIC because of high packet loss rate.
  { net::QUIC_BAD_PACKET_LOSS_RATE, "quic.bad_packet_loss_rate" },
  // Disabled QUIC because of too many PUBLIC_RESETs post handshake.
  { net::QUIC_PUBLIC_RESETS_POST_HANDSHAKE,
   "quic.public_resets_post_handshake" },
  // Disabled QUIC because of too many timeouts with streams open.
  { net::QUIC_TIMEOUTS_WITH_OPEN_STREAMS, "quic.timeouts_with_open_streams" },
  // Closed because we failed to serialize a packet.
  { net::QUIC_FAILED_TO_SERIALIZE_PACKET, "quic.failed_to_serialize_packet" },
  // QUIC timed out after too many RTOs.
  { net::QUIC_TOO_MANY_RTOS, "quic.too_many_rtos" },
  // Crypto errors.

  // Hanshake failed.
  { net::QUIC_HANDSHAKE_FAILED, "quic.handshake_failed" },
  // Handshake message contained out of order tags.
  { net::QUIC_CRYPTO_TAGS_OUT_OF_ORDER, "quic.crypto.tags_out_of_order" },
  // Handshake message contained too many entries.
  { net::QUIC_CRYPTO_TOO_MANY_ENTRIES, "quic.crypto.too_many_entries" },
  // Handshake message contained an invalid value length.
  { net::QUIC_CRYPTO_INVALID_VALUE_LENGTH, "quic.crypto.invalid_value_length" },
  // A crypto message was received after the handshake was complete.
  { net::QUIC_CRYPTO_MESSAGE_AFTER_HANDSHAKE_COMPLETE,
   "quic.crypto_message_after_handshake_complete" },
  // A crypto message was received with an illegal message tag.
  { net::QUIC_INVALID_CRYPTO_MESSAGE_TYPE, "quic.invalid_crypto_message_type" },
  // A crypto message was received with an illegal parameter.
  { net::QUIC_INVALID_CRYPTO_MESSAGE_PARAMETER,
   "quic.invalid_crypto_message_parameter" },
  // An invalid channel id signature was supplied.
  { net::QUIC_INVALID_CHANNEL_ID_SIGNATURE,
   "quic.invalid_channel_id_signature" },
  // A crypto message was received with a mandatory parameter missing.
  { net::QUIC_CRYPTO_MESSAGE_PARAMETER_NOT_FOUND,
   "quic.crypto_message.parameter_not_found" },
  // A crypto message was received with a parameter that has no overlap
  // with the local parameter.
  { net::QUIC_CRYPTO_MESSAGE_PARAMETER_NO_OVERLAP,
   "quic.crypto_message.parameter_no_overlap" },
  // A crypto message was received that contained a parameter with too few
  // values.
  { net::QUIC_CRYPTO_MESSAGE_INDEX_NOT_FOUND,
   "quic_crypto_message_index_not_found" },
  // A demand for an unsupport proof type was received.
  { net::QUIC_UNSUPPORTED_PROOF_DEMAND, "quic.unsupported_proof_demand" },
  // An internal error occured in crypto processing.
  { net::QUIC_CRYPTO_INTERNAL_ERROR, "quic.crypto.internal_error" },
  // A crypto handshake message specified an unsupported version.
  { net::QUIC_CRYPTO_VERSION_NOT_SUPPORTED,
   "quic.crypto.version_not_supported" },
  // A crypto handshake message resulted in a stateless reject.
  { net::QUIC_CRYPTO_HANDSHAKE_STATELESS_REJECT,
   "quic.crypto.handshake_stateless_reject" },
  // There was no intersection between the crypto primitives supported by the
  // peer and ourselves.
  { net::QUIC_CRYPTO_NO_SUPPORT, "quic.crypto.no_support" },
  // The server rejected our client hello messages too many times.
  { net::QUIC_CRYPTO_TOO_MANY_REJECTS, "quic.crypto.too_many_rejects" },
  // The client rejected the server's certificate chain or signature.
  { net::QUIC_PROOF_INVALID, "quic.proof_invalid" },
  // A crypto message was received with a duplicate tag.
  { net::QUIC_CRYPTO_DUPLICATE_TAG, "quic.crypto.duplicate_tag" },
  // A crypto message was received with the wrong encryption level (i.e. it
  // should have been encrypted but was not.)
  { net::QUIC_CRYPTO_ENCRYPTION_LEVEL_INCORRECT,
   "quic.crypto.encryption_level_incorrect" },
  // The server config for a server has expired.
  { net::QUIC_CRYPTO_SERVER_CONFIG_EXPIRED,
   "quic.crypto.server_config_expired" },
  // We failed to setup the symmetric keys for a connection.
  { net::QUIC_CRYPTO_SYMMETRIC_KEY_SETUP_FAILED,
   "quic.crypto.symmetric_key_setup_failed" },
  // A handshake message arrived, but we are still validating the
  // previous handshake message.
  { net::QUIC_CRYPTO_MESSAGE_WHILE_VALIDATING_CLIENT_HELLO,
   "quic.crypto_message_while_validating_client_hello" },
  // A server config update arrived before the handshake is complete.
  { net::QUIC_CRYPTO_UPDATE_BEFORE_HANDSHAKE_COMPLETE,
   "quic.crypto.update_before_handshake_complete" },
  // CHLO cannot fit in one packet.
  { net::QUIC_CRYPTO_CHLO_TOO_LARGE,
   "quic.crypto.chlo_too_large" },
  // This connection involved a version negotiation which appears to have been
  // tampered with.
  { net::QUIC_VERSION_NEGOTIATION_MISMATCH,
   "quic.version_negotiation_mismatch" },

  // Multipath is not enabled, but a packet with multipath flag on is received.
  { net::QUIC_BAD_MULTIPATH_FLAG, "quic.bad_multipath_flag" },
  // A path is supposed to exist but does not.
  { net::QUIC_MULTIPATH_PATH_DOES_NOT_EXIST,
    "quic.quic_multipath_path_does_not_exist" },
  // A path is supposed to be active but is not.
  { net::QUIC_MULTIPATH_PATH_NOT_ACTIVE,
    "quic.quic_multipath_path_not_active" },

  // Network change and connection migration errors.

  // IP address changed causing connection close.
  { net::QUIC_IP_ADDRESS_CHANGED, "quic.ip_address_changed" },
  // Network changed, but connection had no migratable streams.
  { net::QUIC_CONNECTION_MIGRATION_NO_MIGRATABLE_STREAMS,
    "quic.connection_migration_no_migratable_streams" },
  // Connection changed networks too many times.
  { net::QUIC_CONNECTION_MIGRATION_TOO_MANY_CHANGES,
    "quic.connection_migration_too_many_changes" },
  // Connection migration was attempted, but there was no new network to
  // migrate to.
  { net::QUIC_CONNECTION_MIGRATION_NO_NEW_NETWORK,
    "quic.connection_migration_no_new_network" },
  // Network changed, but connection had one or more non-migratable streams.
  { net::QUIC_CONNECTION_MIGRATION_NON_MIGRATABLE_STREAM,
    "quic.connection_migration_non_migratable_stream" },
  // Stream frame overlaps with buffered data.
  { net::QUIC_OVERLAPPING_STREAM_DATA,
    "quic.overlapping_stream_data" },
  // Stream frames arrived too discontiguously so that stream sequencer buffer
  // has too many gaps.
  { net::QUIC_TOO_MANY_FRAME_GAPS,
    "quic.too_many_frame_gaps" },
  // Sequencer buffer get into weird state where continuing read/write
  // will lead to crash.
  { net::QUIC_STREAM_SEQUENCER_INVALID_STATE,
    "quic.stream_sequencer_invalid_state" },
  // Connection closed because of server hits max number of sessions allowed.
  { net::QUIC_TOO_MANY_SESSIONS_ON_SERVER,
    "quic.too_many_sessions_on_server" },

  // No error. Used as bound while iterating.
  { net::QUIC_LAST_ERROR, "quic.last_error"}
};

// Must be updated any time a net::QuicErrorCode is deprecated in
// net/quic/core/quic_packets.h.
const int kDeprecatedQuicErrorCount = 4;
const int kActiveQuicErrorCount =
    net::QUIC_LAST_ERROR - kDeprecatedQuicErrorCount;

static_assert(arraysize(kQuicErrorMap) == kActiveQuicErrorCount,
              "quic_error_map is not in sync with quic protocol!");

}  // namespace

// static
bool GetDomainReliabilityBeaconQuicError(net::QuicErrorCode quic_error,
                                         std::string* beacon_quic_error_out) {
  if (quic_error != net::QUIC_NO_ERROR) {
    // Convert a QUIC error.
    // TODO(juliatuttle): Consider sorting and using binary search?
    for (size_t i = 0; i < arraysize(kQuicErrorMap); i++) {
      if (kQuicErrorMap[i].quic_error == quic_error) {
        *beacon_quic_error_out = kQuicErrorMap[i].beacon_quic_error;
        return true;
      }
    }
  }
  beacon_quic_error_out->clear();
  return false;
}

}  // namespace domain_reliability