/*
 *
 *    Copyright (c) 2013-2017 Nest Labs, Inc.
 *    All rights reserved.
 *
 *    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.
 */

/**
 *    @file
 *      This file defines constants for the Nest InetLayer subsystem.
 *
 *      Error types, ranges, and mappings overrides may be made by
 *      defining the appropriate INET_CONFIG_* or _INET_CONFIG_*
 *      macros.
 *
 *  NOTE WELL: On some platforms, this header is included by C-language programs.
 *
 */

#ifndef INETERROR_H
#define INETERROR_H

#include <InetLayer/InetConfig.h>

#include <SystemLayer/SystemError.h>

// clang-format off

/**
 *  The basic type for all InetLayer errors.
 *
 *  This is defined to a platform- or system-specific type.
 *
 */
typedef INET_CONFIG_ERROR_TYPE          INET_ERROR;

/**
 *  @def INET_ERROR_MIN
 *
 *  @brief
 *    This defines the base or minimum InetLayer error number
 *    range. This value may be configured via #INET_CONFIG_ERROR_MIN.
 *
 */
#define INET_ERROR_MIN                  INET_CONFIG_ERROR_MIN

/**
 *  @def INET_ERROR_MAX
 *
 *  @brief
 *    This defines the top or maximum InetLayer error number
 *    range. This value may be configured via #INET_CONFIG_ERROR_MAX.
 *
 */
#define INET_ERROR_MAX                  INET_CONFIG_ERROR_MAX

/**
 *  @def _INET_ERROR(e)
 *
 *  @brief
 *    This defines a mapping function for InetLayer errors that allows
 *    mapping such errors into a platform- or system-specific
 *    range. This function may be configured via
 *    #_INET_CONFIG_ERROR(e).
 *
 *  @param[in]  e  The InetLayer error to map.
 *
 *  @return The mapped InetLayer error.
 *
 */
#define _INET_ERROR(e)                  _INET_CONFIG_ERROR(e)

/**
 *  @def INET_NO_ERROR
 *
 *  @brief
 *    This defines the InetLayer error code for success or no
 *    error. This value may be configured via #INET_CONFIG_NO_ERROR.
 *
 */
#define INET_NO_ERROR                   INET_CONFIG_NO_ERROR

/**
 *  @name Error Definitions
 *
 *  @{
 */

/**
 *  @def INET_ERROR_WRONG_ADDRESS_TYPE
 *
 *  @brief
 *    The Internet Protocol (IP) address type or scope does not match
 *    the expected type or scope.
 *
 */
#define INET_ERROR_WRONG_ADDRESS_TYPE                       _INET_ERROR(0)

/**
 *  @def INET_ERROR_CONNECTION_ABORTED
 *
 *  @brief
 *    A connection has been aborted.
 *
 */
#define INET_ERROR_CONNECTION_ABORTED                       _INET_ERROR(1)

/**
 *  @def INET_ERROR_PEER_DISCONNECTED
 *
 *  @brief
 *    A remote connection peer disconnected.
 *
 */
#define INET_ERROR_PEER_DISCONNECTED                        _INET_ERROR(2)

/**
 *  @def INET_ERROR_INCORRECT_STATE
 *
 *  @brief
 *    An unexpected state was encountered.
 *
 */
#define INET_ERROR_INCORRECT_STATE                          _INET_ERROR(3)

/**
 *  @def INET_ERROR_MESSAGE_TOO_LONG
 *
 *  @brief
 *    A message is too long.
 *
 */
#define INET_ERROR_MESSAGE_TOO_LONG                         _INET_ERROR(4)

/**
 *  @def INET_ERROR_NO_CONNECTION_HANDLER
 *
 *  @brief
 *    No callback has been registered for handling an incoming TCP
 *    connection.
 *
 */
#define INET_ERROR_NO_CONNECTION_HANDLER                    _INET_ERROR(5)

/**
 *  @def INET_ERROR_NO_MEMORY
 *
 *  @brief
 *    A request for memory could not be fulfilled.
 *
 */
#define INET_ERROR_NO_MEMORY                                _INET_ERROR(6)

/**
 *  @def INET_ERROR_OUTBOUND_MESSAGE_TRUNCATED
 *
 *  @brief
 *    Fewer message bytes were sent than requested.
 *
 */
#define INET_ERROR_OUTBOUND_MESSAGE_TRUNCATED               _INET_ERROR(7)

/**
 *  @def INET_ERROR_INBOUND_MESSAGE_TOO_BIG
 *
 *  @brief
 *    More message data is pending than available buffer space
 *    available to copy it.
 *
 */
#define INET_ERROR_INBOUND_MESSAGE_TOO_BIG                  _INET_ERROR(8)

/**
 *  @def INET_ERROR_HOST_NOT_FOUND
 *
 *  @brief
 *    A requested host name could not be resolved to an address.
 *
 */
#define INET_ERROR_HOST_NOT_FOUND                           _INET_ERROR(9)

/**
 *  @def INET_ERROR_DNS_TRY_AGAIN
 *
 *  @brief
 *    A name server returned a temporary failure indication; try
 *    again later.
 *
 */
#define INET_ERROR_DNS_TRY_AGAIN                            _INET_ERROR(10)

/**
 *  @def INET_ERROR_DNS_NO_RECOVERY
 *
 *  @brief
 *    A name server returned an unrecoverable error.
 *
 */
#define INET_ERROR_DNS_NO_RECOVERY                          _INET_ERROR(11)

/**
 *  @def INET_ERROR_BAD_ARGS
 *
 *  @brief
 *    An invalid argument or arguments were supplied.
 *
 */
#define INET_ERROR_BAD_ARGS                                 _INET_ERROR(12)

/**
 *  @def INET_ERROR_WRONG_PROTOCOL_TYPE
 *
 *  @brief
 *    An incorrect or unexpected protocol type was encountered.
 *
 */
#define INET_ERROR_WRONG_PROTOCOL_TYPE                      _INET_ERROR(13)

/**
 *  @def INET_ERROR_UNKNOWN_INTERFACE
 *
 *  @brief
 *    An unknown interface identifier was encountered.
 *
 */
#define INET_ERROR_UNKNOWN_INTERFACE                        _INET_ERROR(14)

/**
 *  @def INET_ERROR_NOT_IMPLEMENTED
 *
 *  @brief
 *    A requested function or feature is not implemented.
 *
 */
#define INET_ERROR_NOT_IMPLEMENTED                          _INET_ERROR(15)

/**
 *  @def INET_ERROR_ADDRESS_NOT_FOUND
 *
 *  @brief
 *    A requested address type, class, or scope cannot be found.
 *
 */
#define INET_ERROR_ADDRESS_NOT_FOUND                        _INET_ERROR(16)

/**
 *  @def INET_ERROR_HOST_NAME_TOO_LONG
 *
 *  @brief
 *    A requested host name is too long.
 *
 */
#define INET_ERROR_HOST_NAME_TOO_LONG                       _INET_ERROR(17)

/**
 *  @def INET_ERROR_INVALID_HOST_NAME
 *
 *  @brief
 *    A requested host name and port is invalid.
 *
 */
#define INET_ERROR_INVALID_HOST_NAME                        _INET_ERROR(18)

/**
 *  @def INET_ERROR_NOT_SUPPORTED
 *
 *  @brief
 *    A requested function or feature is not supported.
 *
 */
#define INET_ERROR_NOT_SUPPORTED                            _INET_ERROR(19)

/**
 *  @def INET_ERROR_NO_ENDPOINTS
 *
 *  @brief
 *    No endpoint of the specified type is available.
 *
 */
#define INET_ERROR_NO_ENDPOINTS                             _INET_ERROR(20)

/**
 *  @def INET_ERROR_IDLE_TIMEOUT
 *
 *  @brief
 *    A TCP connection timed out due to inactivity.
 *
 */
#define INET_ERROR_IDLE_TIMEOUT                             _INET_ERROR(21)

/**
 *  @def INET_ERROR_UNEXPECTED_EVENT
 *
 *  @brief
 *    An unexpected event occurred or was handled.
 *
 */
#define INET_ERROR_UNEXPECTED_EVENT                         _INET_ERROR(22)

/**
 *  @def INET_ERROR_INVALID_IPV6_PKT
 *
 *  @brief
 *    An IPv6 packet is invalid.
 *
 */
#define INET_ERROR_INVALID_IPV6_PKT                         _INET_ERROR(23)

/**
 *  @def INET_ERROR_INTERFACE_INIT_FAILURE
 *
 *  @brief
 *    Failure to initialize an interface.
 *
 */
#define INET_ERROR_INTERFACE_INIT_FAILURE                   _INET_ERROR(24)

/**
 *  @def INET_ERROR_TCP_USER_TIMEOUT
 *
 *  @brief
 *    TCP Connection timed out waiting for
 *    acknowledgment for transmitted packet.
 *
 */
#define INET_ERROR_TCP_USER_TIMEOUT                         _INET_ERROR(25)

/**
 *  @def INET_ERROR_TCP_CONNECT_TIMEOUT
 *
 *  @brief
 *    TCP Connection timed out waiting for
 *    a successful connection or a report
 *    of an error.
 *
 */
#define INET_ERROR_TCP_CONNECT_TIMEOUT                      _INET_ERROR(26)

/**
 *  @def INET_ERROR_INCOMPATIBLE_IP_ADDRESS_TYPE
 *
 *  @brief
 *    The supplied text-form IP address was not compatible with the requested
 *    IP address type.
 *
 */
#define INET_ERROR_INCOMPATIBLE_IP_ADDRESS_TYPE             _INET_ERROR(27)

//                        !!!!! IMPORTANT !!!!!
//
// If you add new Inet errors, please update the translation of error
// codes to strings in InetError.cpp, and add them to unittest
// in test-apps/TestErrorStr.cpp

/**
 *  @}
 */

// clang-format on

namespace nl {
namespace Inet {

extern void RegisterInetLayerErrorFormatter(void);
extern bool FormatInetLayerError(char * buf, uint16_t bufSize, int32_t err);

} // namespace Inet
} // namespace nl


#if INET_CONFIG_PROVIDE_OBSOLESCENT_INTERFACES

/**
 *  @name Error Mapping and Description Functions
 *
 *  @{
 */

#if INET_CONFIG_WILL_OVERRIDE_OS_ERROR_FUNCS

extern INET_ERROR INET_MapOSError(int e);
extern const char *INET_DescribeOSError(INET_ERROR err);
extern bool INET_IsOSError(INET_ERROR err);

#else // !INET_CONFIG_WILL_OVERRIDE_OS_ERROR_FUNCS

#ifdef __cplusplus

/**
 * This implements a mapping function for InetLayer errors that allows
 * mapping underlying POSIX network and OS stack errors into a
 * platform- or system-specific range.
 *
 * @param[in] e  The POSIX network or OS error to map.
 *
 * @return The mapped POSIX network or OS error.
 *
 */
static inline INET_ERROR INET_MapOSError(int e)
{
    return static_cast<INET_ERROR>(::nl::Weave::System::MapErrorPOSIX(e));
}

/**
 * This implements a function to return an NULL-terminated OS-specific
 * descriptive C string, associated with the specified, mapped OS
 * error.
 *
 * @param[in] err  The mapped OS-specific error to describe.
 *
 * @return A NULL-terminated, OS-specific descriptive C string
 *         describing the error.
 *
 */
static inline const char *INET_DescribeOSError(INET_ERROR err)
{
    return ::nl::Weave::System::DescribeErrorPOSIX(err);
}

/**
 * This implements an introspection function for InetLayer errors that
 * allows the caller to determine whether the specified error is an
 * internal, underlying OS error.
 *
 * @param[in] err  The mapped error to determine whether it is an OS
 *                 error.
 *
 * @return True if the specified error is an OS error; otherwise, false.
 *
 */
static inline bool INET_IsOSError(INET_ERROR err)
{
    return ::nl::Weave::System::IsErrorPOSIX(err);
}

#endif // !defined(__cplusplus)
#endif // !INET_CONFIG_WILL_OVERRIDE_OS_ERROR_FUNCS

#if WEAVE_SYSTEM_CONFIG_USE_LWIP
#if INET_CONFIG_WILL_OVERRIDE_LWIP_ERROR_FUNCS

extern INET_ERROR INET_MapLwIPError(err_t e);
extern const char *INET_DescribeLwIPError(INET_ERROR err);
extern bool INET_IsLwIPError(INET_ERROR err);

#else // !INET_CONFIG_WILL_OVERRIDE_LWIP_ERROR_FUNCS

#ifdef __cplusplus

/**
 * This implements a mapping function for InetLayer errors that allows
 * mapping underlying LwIP network stack errors into a platform- or
 * system-specific range.
 *
 * @param[in] e  The LwIP error to map.
 *
 * @return The mapped LwIP network or OS error.
 *
 */
static inline INET_ERROR INET_MapLwIPError(err_t e)
{
    return static_cast<INET_ERROR>(::nl::Weave::System::MapErrorLwIP(e));
}

/**
 * This implements a function to return an NULL-terminated
 * LwIP-specific descriptive C string, associated with the specified,
 * mapped LwIP error.
 *
 * @param[in] err  The mapped LwIP-specific error to describe.
 *
 * @return A NULL-terminated, LwIP-specific descriptive C string
 *         describing the error.
 *
 */
static inline const char *INET_DescribeLwIPError(INET_ERROR err)
{
    return ::nl::Weave::System::DescribeErrorLwIP(err);
}

/**
 * This implements an introspection function for InetLayer errors that
 * allows the caller to determine whether the specified error is an
 * internal, underlying LwIP error.
 *
 * @param[in] err  The mapped error to determine whether it is a LwIP
 *                 error.
 *
 * @return True if the specified error is a LwIP error; otherwise, false.
 *
 */
static inline bool INET_IsLwIPError(INET_ERROR err)
{
    return ::nl::Weave::System::IsErrorLwIP(err);
}

#endif // !defined(__cplusplus)
#endif // !INET_CONFIG_WILL_OVERRIDE_LWIP_ERROR_FUNCS
#endif // WEAVE_SYSTEM_CONFIG_USE_LWIP

/**
 *  @}
 */

#endif // INET_CONFIG_PROVIDE_OBSOLESCENT_INTERFACES

#endif // !defined(INETERROR_H)