/*
* FreeRTOS Secure Sockets V1.3.1
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://aws.amazon.com/freertos
* http://www.FreeRTOS.org
*/
/**
* @file iot_secure_sockets.h
* @brief Secure Sockets Interface.
*
* Secure sockets is a portable layer for establishing a TCP/IP
* connection, with the option of using TLS.
*
* Secure sockets is based on the Berkeley sockets API.
* A few difference general differences between Berkeley and SOCKETS are:
* - SOCKETS has additional socket options to enable TLS, server name
* indication, and per-socket root of trust server certificates. See
* SOCKETS_SetSockOpt() for more information.
* - SOCKETS API return an error code, rather than returning -1 and setting
* a global errno value.
*
*/
#ifndef _AWS_SECURE_SOCKETS_H_
#define _AWS_SECURE_SOCKETS_H_
/*
#ifdef __cplusplus
* extern "C" {
#endif
*/
#include <stdint.h>
#include <stddef.h>
#include "iot_secure_sockets_config.h"
#include "iot_secure_sockets_config_defaults.h"
#include "iot_lib_init.h"
/**
* @ingroup SecureSockets_datatypes_handles
* @brief The socket handle data type.
*
* For detail of socket, refer to [Network Sockets]
* (https://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/socket.html)
*
* Data contained by the Socket_t type is port specific.
*/
struct xSOCKET;
typedef struct xSOCKET * Socket_t; /**< @brief Socket handle data type. */
/**
* @brief The "size_t" of secure sockets.
*
* This type is used for compatibility with the expected Berkeley sockets
* naming.
*/
#define Socklen_t uint32_t
/**
* @anchor SocketsErrors
* @name SocketsErrors
* @brief Error codes returned by the SOCKETS API.
*
* Note that SOCKETS API may also propagate port-specific
* error codes when they are more descriptive. See your
* port's error codes for more details.
* PORT_SPECIFIC_LINK
*/
/**@{ */
#define SOCKETS_ERROR_NONE ( 0 ) /*!< No error. */
#define SOCKETS_SOCKET_ERROR ( -1 ) /*!< Catch-all sockets error code. */
#define SOCKETS_EWOULDBLOCK ( -11 ) /*!< A resource is temporarily unavailable. */
#define SOCKETS_ENOMEM ( -12 ) /*!< Memory allocation failed. */
#define SOCKETS_EINVAL ( -22 ) /*!< Invalid argument. */
#define SOCKETS_ENOPROTOOPT ( -109 ) /*!< A bad option was specified . */
#define SOCKETS_ENOTCONN ( -126 ) /*!< The supplied socket is not connected. */
#define SOCKETS_EISCONN ( -127 ) /*!< The supplied socket is already connected. */
#define SOCKETS_ECLOSED ( -128 ) /*!< The supplied socket has already been closed. */
#define SOCKETS_TLS_INIT_ERROR ( -1001 ) /*!< TLS initialization failed. */
#define SOCKETS_TLS_HANDSHAKE_ERROR ( -1002 ) /*!< TLS handshake failed. */
#define SOCKETS_TLS_SERVER_UNVERIFIED ( -1003 ) /*!< A connection was made but the server could not be verified. It is recommended that the socket be closed. */
#define SOCKETS_TLS_RECV_ERROR ( -1004 ) /*!< TLS receive operation failed. */
#define SOCKETS_TLS_SEND_ERROR ( -1005 ) /*!< TLS send operation failed. */
#define SOCKETS_PERIPHERAL_RESET ( -1006 ) /*!< Communications peripheral has been reset. */
/**@} */
/**
* @brief Assigned to an Socket_t variable when the socket is not valid.
*/
#define SOCKETS_INVALID_SOCKET ( ( Socket_t ) ~0U )
/**
* @anchor SocketDomains
* @name SocketDomains
*
* @brief Options for the lDomain parameter of SOCKETS_Socket()
* function.
*
* These select the protocol family to be used for communication.
*/
/**@{ */
#define SOCKETS_AF_INET ( 2 ) /*!< IPv4 Internet Protocols. */
#define SOCKETS_PF_INET SOCKETS_AF_INET /*!< IPv4 Internet Protocol. */
#define SOCKETS_AF_INET6 ( 10 ) /*!< IPv6 Internet Protocols. This option is currently not supported. */
/**@} */
/**
* @anchor SocketTypes
* @name SocketTypes
*
* @brief Options for the lType parameter of SOCKETS_Socket()
* function.
*
* These specify the communication semantics.
*/
/**@{ */
#define SOCKETS_SOCK_DGRAM ( 2 ) /*!< Datagram. */
#define SOCKETS_SOCK_STREAM ( 1 ) /*!< Byte-stream. */
/**@} */
/**
* @anchor Protocols
* @name Protocols
*
* @brief Options for the lProtocol parameter of SOCKETS_Socket() function.
*
*/
/**@{ */
#define SOCKETS_IPPROTO_UDP ( 17 ) /*!< UDP. This option is currently not supported. */
#define SOCKETS_IPPROTO_TCP ( 6 ) /*!< TCP. */
/**@} */
/**
* @anchor SetSockOptOptions
* @name SetSockOptOptions
*
* @brief Options for lOptionName in SOCKETS_SetSockOpt().
*
*/
/**@{ */
#define SOCKETS_SO_RCVTIMEO ( 0 ) /**< Set the receive timeout. */
#define SOCKETS_SO_SNDTIMEO ( 1 ) /**< Set the send timeout. */
#define SOCKETS_SO_SNDBUF ( 4 ) /**< Set the size of the send buffer (TCP only). */
#define SOCKETS_SO_RCVBUF ( 5 ) /**< Set the size of the receive buffer (TCP only). */
#define SOCKETS_SO_SERVER_NAME_INDICATION ( 6 ) /**< Toggle client use of TLS SNI. */
#define SOCKETS_SO_TRUSTED_SERVER_CERTIFICATE ( 7 ) /**< Override default TLS server certificate trust. Must be PEM encoded and length must include null terminator. */
#define SOCKETS_SO_REQUIRE_TLS ( 8 ) /**< Toggle client enforcement of TLS. */
#define SOCKETS_SO_NONBLOCK ( 9 ) /**< Socket is nonblocking. */
#define SOCKETS_SO_ALPN_PROTOCOLS ( 10 ) /**< Application protocol list to be included in TLS ClientHello. */
#define SOCKETS_SO_WAKEUP_CALLBACK ( 17 ) /**< Set the callback to be called whenever there is data available on the socket for reading. */
#define SOCKETS_SO_TCPKEEPALIVE ( 18 ) /**< Enable or Disable TCP keep-alive functionality. */
#define SOCKETS_SO_TCPKEEPALIVE_INTERVAL ( 19 ) /**< Set the time in seconds between individual TCP keep-alive probes. */
#define SOCKETS_SO_TCPKEEPALIVE_COUNT ( 20 ) /**< Set the maximum number of keep-alive probes TCP should send before dropping the connection. */
#define SOCKETS_SO_TCPKEEPALIVE_IDLE_TIME ( 21 ) /**< Set the time in seconds for which the connection needs to remain idle before TCP starts sending keep-alive probes. */
/**@} */
/**
* @anchor ShutdownFlags <br>
* @name ShutdownFlags
*
* @brief Options for the ulHow parameter in SOCKETS_Shutdown().
*/
/**@{ */
#define SOCKETS_SHUT_RD ( 0 ) /**< No further receives. */
#define SOCKETS_SHUT_WR ( 1 ) /**< No further sends. */
#define SOCKETS_SHUT_RDWR ( 2 ) /**< No further send or receive. */
/**@} */
/**
* @brief Maximum length of an ASCII DNS name.
*/
#define securesocketsMAX_DNS_NAME_LENGTH ( 253 )
/**
* @ingroup SecureSockets_datatypes_paramstructs
* @brief Socket address.
*
* \sa PORT_SPECIFIC_LINK
*/
typedef struct SocketsSockaddr
{
uint8_t ucLength; /**< Length of SocketsSockaddr structure. */
uint8_t ucSocketDomain; /**< Only SOCKETS_AF_INET is supported. */
uint16_t usPort; /**< Port number. Convention is to call this sin_port. */
uint32_t ulAddress; /**< IP Address. Convention is to call this sin_addr. */
} SocketsSockaddr_t;
/**
* @brief Well-known port numbers.
*/
#define securesocketsDEFAULT_TLS_DESTINATION_PORT 443
/**
* @brief Secure Sockets library initialization function.
*
* This function does general initialization and setup. It must be called once
* and only once before calling any other function.
*
* @return
* * `pdPASS` if everything succeeds
* * `pdFAIL` otherwise.
*/
extern BaseType_t SOCKETS_Init( void );
/**
* @brief Creates a TCP socket.
*
* See the [FreeRTOS+TCP networking tutorial]
* (https://freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/TCP_Networking_Tutorial.html)
* for more information on TCP sockets.
*
* See the [Berkeley Sockets API]
* (https://en.wikipedia.org/wiki/Berkeley_sockets#Socket_API_functions)
* in wikipedia
*
* @sa SOCKETS_Close()
*
* @param[in] lDomain Must be set to SOCKETS_AF_INET. See @ref SocketDomains.
* @param[in] lType Set to SOCKETS_SOCK_STREAM to create a TCP socket.
* No other value is valid. See @ref SocketTypes.
* @param[in] lProtocol Set to SOCKETS_IPPROTO_TCP to create a TCP socket.
* No other value is valid. See @ref Protocols.
*
* @return
* * If a socket is created successfully, then the socket handle is
* returned
* * @ref SOCKETS_INVALID_SOCKET is returned if an error occurred.
*/
/*
* This call allocates memory and claims a socket resource.
*/
/* @[declare_secure_sockets_socket] */
Socket_t SOCKETS_Socket( int32_t lDomain,
int32_t lType,
int32_t lProtocol );
/* @[declare_secure_sockets_socket] */
/**
* @brief Bind a TCP socket.
*
* See the [FreeRTOS+TCP networking tutorial]
* (https://freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/TCP_Networking_Tutorial.html)
* for more information on TCP sockets.
*
* See the [Berkeley Sockets API]
* (https://en.wikipedia.org/wiki/Berkeley_sockets#Socket_API_functions)
* in wikipedia
*
* @sa SOCKETS_Bind()
* A pre-configured source port allows customers to bind to the specified local port instead of ephemeral port
* for security and packet filter reasons.
*
* Limitations:
*
* i. The caller of SOCKETS_Bind() API should make sure the socket address has the correct local IP address for the interface.
* ii. Some source ports may be unavailable depending on the TCP/IP stack implementation.
*
* NOTE: If the SOCKETS_Bind() API binds to a source port in ephemeral port range, and the caller calls SOCKETS_Bind() API
* before SOCKETS_Connect() API, then a conflict of source port arises as another TCP connection
* may pick the the same chosen port via tcp_new_port() API ( by scanning its internal TCP connection list )
*
*
* @param[in] xSocket The handle of the socket to which specified address to be bound.
* @param[in] pxAddress A pointer to a SocketsSockaddr_t structure that contains
* the address and port to be bound to the socket.
* @param[in] xAddressLength Should be set to sizeof( @ref SocketsSockaddr_t ).
*
* @return
* * If the bind was successful then SOCKETS_ERROR_NONE is returned.
* * If an error occurred, a negative value is returned. @ref SocketsErrors
*/
/* @[declare_secure_sockets_bind] */
int32_t SOCKETS_Bind( Socket_t xSocket,
SocketsSockaddr_t * pxAddress,
Socklen_t xAddressLength );
/* @[declare_secure_sockets_bind] */
/**
* @brief Connects the socket to the specified IP address and port.
*
* The socket must first have been successfully created by a call to SOCKETS_Socket().
*
* \note To create a secure socket, SOCKETS_SetSockOpt() should be called with the
* SOCKETS_SO_REQUIRE_TLS option \a before SOCKETS_Connect() is called.
*
* If this function returns an error the socket is considered invalid.
*
* \warning SOCKETS_Connect() is not safe to be called on the same socket
* from multiple threads simultaneously with SOCKETS_Connect(),
* SOCKETS_SetSockOpt(), SOCKETS_Shutdown(), SOCKETS_Close().
*
* See the [Berkeley Sockets API]
* (https://en.wikipedia.org/wiki/Berkeley_sockets#Socket_API_functions)
* in wikipedia
*
* @param[in] xSocket The handle of the socket to be connected.
* @param[in] pxAddress A pointer to a SocketsSockaddr_t structure that contains the
* the address to connect the socket to.
* @param[in] xAddressLength Should be set to sizeof( @ref SocketsSockaddr_t ).
*
* @return
* * @ref SOCKETS_ERROR_NONE if a connection is established.
* * If an error occurred, a negative value is returned. @ref SocketsErrors
*/
/* @[declare_secure_sockets_connect] */
int32_t SOCKETS_Connect( Socket_t xSocket,
SocketsSockaddr_t * pxAddress,
Socklen_t xAddressLength );
/* @[declare_secure_sockets_connect] */
/**
* @brief Receive data from a TCP socket.
*
* The socket must have already been created using a call to SOCKETS_Socket()
* and connected to a remote socket using SOCKETS_Connect().
*
* See the [Berkeley Sockets API]
* (https://en.wikipedia.org/wiki/Berkeley_sockets#Socket_API_functions)
* in wikipedia
*
* @param[in] xSocket The handle of the socket from which data is being received.
* @param[out] pvBuffer The buffer into which the received data will be placed.
* @param[in] xBufferLength The maximum number of bytes which can be received.
* pvBuffer must be at least xBufferLength bytes long.
* @param[in] ulFlags Not currently used. Should be set to 0.
*
* @return
* * If the receive was successful then the number of bytes received (placed in the
* buffer pointed to by pvBuffer) is returned.
* * If a timeout occurred before data could be received then 0 is returned (timeout
* is set using @ref SOCKETS_SO_RCVTIMEO).
* * If an error occurred, a negative value is returned. @ref SocketsErrors
*/
/* @[declare_secure_sockets_recv] */
int32_t SOCKETS_Recv( Socket_t xSocket,
void * pvBuffer,
size_t xBufferLength,
uint32_t ulFlags );
/* @[declare_secure_sockets_recv] */
/**
* @brief Transmit data to the remote socket.
*
* The socket must have already been created using a call to SOCKETS_Socket() and
* connected to a remote socket using SOCKETS_Connect().
*
* See the [Berkeley Sockets API]
* (https://en.wikipedia.org/wiki/Berkeley_sockets#Socket_API_functions)
* in wikipedia
*
* @param[in] xSocket The handle of the sending socket.
* @param[in] pvBuffer The buffer containing the data to be sent.
* @param[in] xDataLength The length of the data to be sent.
* @param[in] ulFlags Not currently used. Should be set to 0.
*
* @return
* * On success, the number of bytes actually sent is returned.
* * If an error occurred, a negative value is returned. @ref SocketsErrors
*/
/* @[declare_secure_sockets_send] */
int32_t SOCKETS_Send( Socket_t xSocket,
const void * pvBuffer,
size_t xDataLength,
uint32_t ulFlags );
/* @[declare_secure_sockets_send] */
/**
* @brief Closes all or part of a full-duplex connection on the socket.
*
* Disable reads and writes on a connected TCP socket. A connected TCP socket must be gracefully
* shut down before it can be closed.
*
* See the [Berkeley Sockets API]
* (https://en.wikipedia.org/wiki/Berkeley_sockets#Socket_API_functions)
* in wikipedia
*
* \warning SOCKETS_Shutdown() is not safe to be called on the same socket
* from multiple threads simultaneously with SOCKETS_Connect(),
* SOCKETS_SetSockOpt(), SOCKETS_Shutdown(), SOCKETS_Close().
*
* @param[in] xSocket The handle of the socket to shutdown.
* @param[in] ulHow SOCKETS_SHUT_RD, SOCKETS_SHUT_WR or SOCKETS_SHUT_RDWR.
* @ref ShutdownFlags
*
* @return
* * If the operation was successful, 0 is returned.
* * If an error occurred, a negative value is returned. @ref SocketsErrors
*/
/* @[declare_secure_sockets_shutdown] */
int32_t SOCKETS_Shutdown( Socket_t xSocket,
uint32_t ulHow );
/* @[declare_secure_sockets_shutdown] */
/**
* @brief Closes the socket and frees the related resources.
*
* A socket should be shutdown gracefully before it is closed, and cannot be used after it has been closed.
*
* See the [Berkeley Sockets API]
* (https://en.wikipedia.org/wiki/Berkeley_sockets#Socket_API_functions)
* in wikipedia
*
* \warning SOCKETS_Close() is not safe to be called on the same socket
* from multiple threads simultaneously with SOCKETS_Connect(),
* SOCKETS_SetSockOpt(), SOCKETS_Shutdown(), SOCKETS_Close().
*
* @param[in] xSocket The handle of the socket to close.
*
* @return
* * On success, 0 is returned.
* * If an error occurred, a negative value is returned. @ref SocketsErrors
*/
/* @[declare_secure_sockets_close] */
int32_t SOCKETS_Close( Socket_t xSocket );
/* @[declare_secure_sockets_close] */
/**
* @brief AWS IoT ALPN protocol name for MQTT over TLS on server port 443.
*/
#define socketsAWS_IOT_ALPN_MQTT "x-amzn-mqtt-ca"
/**
* @brief Manipulates the options for the socket.
*
* See the [Berkeley Sockets API]
* (https://en.wikipedia.org/wiki/Berkeley_sockets#Socket_API_functions)
* in wikipedia
*
* @param[in] xSocket The handle of the socket to set the option for.
* @param[in] lLevel Not currently used. Should be set to 0.
* @param[in] lOptionName See @ref SetSockOptOptions.
* @param[in] pvOptionValue A buffer containing the value of the option to set.
* @param[in] xOptionLength The length of the buffer pointed to by pvOptionValue.
*
* \warning SOCKETS_Close() is not safe to be called on the same socket
* from multiple threads simultaneously with SOCKETS_Connect(),
* SOCKETS_SetSockOpt(), SOCKETS_Shutdown(), SOCKETS_Close().
*
* @note Socket option support and possible values vary by port. Please see
* PORT_SPECIFIC_LINK to check the valid options and limitations of your device.
*
* - Berkeley Socket Options
* - @ref SOCKETS_SO_RCVTIMEO
* - Sets the receive timeout
* - pvOptionValue (TickType_t) is the number of milliseconds that the
* receive function should wait before timing out.
* - Setting pvOptionValue = 0 causes receive to wait forever.
* - See PORT_SPECIFIC_LINK for device limitations.
* - @ref SOCKETS_SO_SNDTIMEO
* - Sets the send timeout
* - pvOptionValue (TickType_t) is the number of milliseconds that the
* send function should wait before timing out.
* - Setting pvOptionValue = 0 causes send to wait forever.
* - See PORT_SPECIFIC_LINK for device limitations.
* - Non-Standard Options
* - @ref SOCKETS_SO_NONBLOCK
* - Makes a socket non-blocking.
* - Non-blocking connect is not supported - socket option should be
* called after connect.
* - pvOptionValue is ignored for this option.
* - @ref SOCKETS_SO_WAKEUP_CALLBACK
* - Set the callback to be called whenever there is data available on
* the socket for reading
* - This option provides an asynchronous way to handle received data
* - pvOptionValue is a pointer to the callback function
* - See PORT_SPECIFIC_LINK for device limitations.
* - Security Sockets Options
* - @ref SOCKETS_SO_REQUIRE_TLS
* - Use TLS for all connect, send, and receive on this socket.
* - This socket options MUST be set for TLS to be used, even
* if other secure socket options are set.
* - This socket option should be set before SOCKETS_Connect() is
* called.
* - pvOptionValue is ignored for this option.
* - @ref SOCKETS_SO_TRUSTED_SERVER_CERTIFICATE
* - Set the root of trust server certificate for the socket.
* - This socket option only takes effect if @ref SOCKETS_SO_REQUIRE_TLS
* is also set. If @ref SOCKETS_SO_REQUIRE_TLS is not set,
* this option will be ignored.
* - pvOptionValue is a pointer to the formatted server certificate.
* TODO: Link to description of how to format certificates with \n
* - xOptionLength (BaseType_t) is the length of the certificate
* in bytes.
* - @ref SOCKETS_SO_SERVER_NAME_INDICATION
* - Use Server Name Indication (SNI)
* - This socket option only takes effect if @ref SOCKETS_SO_REQUIRE_TLS
* is also set. If @ref SOCKETS_SO_REQUIRE_TLS is not set,
* this option will be ignored.
* - pvOptionValue is a pointer to a string containing the hostname
* - xOptionLength is the length of the hostname string in bytes.
* - @ref SOCKETS_SO_ALPN_PROTOCOLS
* - Negotiate an application protocol along with TLS.
* - The ALPN list is expressed as an array of NULL-terminated ANSI
* strings.
* - xOptionLength is the number of items in the array.
* - @ref SOCKETS_SO_TCPKEEPALIVE
* - Enable or disable the TCP keep-alive functionality.
* - pvOptionValue is the value to enable or disable Keepalive.
* - @ref SOCKETS_SO_TCPKEEPALIVE_INTERVAL
* - Set the time in seconds between individual TCP keep-alive probes.
* - pvOptionValue is the time in seconds.
* - @ref SOCKETS_SO_TCPKEEPALIVE_COUNT
* - Set the maximum number of keep-alive probes TCP should send before
* dropping the connection.
* - pvOptionValue is the maximum number of keep-alive probes.
* - @ref SOCKETS_SO_TCPKEEPALIVE_IDLE_TIME
* - Set the time in seconds for which the connection needs to remain idle
* before TCP starts sending keep-alive probes.
* - pvOptionValue is the time in seconds.
*
* @return
* * On success, 0 is returned.
* * If an error occurred, a negative value is returned. @ref SocketsErrors
*/
/* @[declare_secure_sockets_setsockopt] */
int32_t SOCKETS_SetSockOpt( Socket_t xSocket,
int32_t lLevel,
int32_t lOptionName,
const void * pvOptionValue,
size_t xOptionLength );
/* @[declare_secure_sockets_setsockopt] */
/**
* @brief Resolve a host name using Domain Name Service.
*
* See the [Berkeley Sockets API]
* (https://en.wikipedia.org/wiki/Berkeley_sockets#Socket_API_functions)
* in wikipedia
*
* @param[in] pcHostName The host name to resolve.
* @return
* * The IPv4 address of the specified host.
* * If an error has occurred, 0 is returned.
*/
/* @[declare_secure_sockets_gethostbyname] */
uint32_t SOCKETS_GetHostByName( const char * pcHostName );
/* @[declare_secure_sockets_gethostbyname] */
/**
* @brief Convert an unsigned thirty-two-bit value from host endianness to network
* endianness.
*
* @param[in] usIn The unsigned thirty-two-bit value to convert.
*/
#if defined( socketsconfigBYTE_ORDER ) && ( socketsconfigBYTE_ORDER == pdLITTLE_ENDIAN )
#define SOCKETS_htonl( ulIn ) ( ( uint32_t ) ( ( ( ulIn & 0xFF ) << 24 ) | ( ( ulIn & 0xFF00 ) << 8 ) | ( ( ulIn & 0xFF0000 ) >> 8 ) | ( ( ulIn & 0xFF000000 ) >> 24 ) ) )
#else
#define SOCKETS_htonl( usIn ) ( ( uint32_t ) ( usIn ) )
#endif
/**
* @brief Convert an unsigned thirty-two-bit value from network endianness to host
* endianness.
*
* @param[in] usIn The unsigned thirty-two-bit value to convert.
*/
#define SOCKETS_ntohl( usIn ) SOCKETS_htonl( usIn )
/**
* @brief Convert an unsigned sixteen-bit value from host endianness to network
* endianness.
*
* @param[in] usIn The unsigned sixteen-bit value to convert.
*/
#if defined( socketsconfigBYTE_ORDER ) && ( socketsconfigBYTE_ORDER == pdLITTLE_ENDIAN )
#define SOCKETS_htons( usIn ) ( ( uint16_t ) ( ( ( usIn ) << 8U ) | ( ( usIn ) >> 8U ) ) )
#else
#define SOCKETS_htons( usIn ) ( ( uint16_t ) ( usIn ) )
#endif
/**
* @brief Convert an unsigned sixteen-bit value from network endianness to host
* endianness.
*
* @param[in] usIn The unsigned sixteen-bit value to convert.
*/
#define SOCKETS_ntohs( usIn ) SOCKETS_htons( usIn )
/**
* @brief Convert an IP address expressed as four separate numeric octets into a an IP address expressed as a 32-bit number in network byte order
* (for example 192, 168, 0, 100)
*
* @param[in] ucOctet0 0th IP Octet
* @param[in] ucOctet1 1st IP Octet
* @param[in] ucOctet2 2nd IP Octet
* @param[in] ucOctet3 3rd IP Octet
*/
#if defined( socketsconfigBYTE_ORDER ) && ( socketsconfigBYTE_ORDER == pdLITTLE_ENDIAN )
#define SOCKETS_inet_addr_quick( ucOctet0, ucOctet1, ucOctet2, ucOctet3 ) \
( ( ( ( uint32_t ) ( ucOctet3 ) ) << 24UL ) | \
( ( ( uint32_t ) ( ucOctet2 ) ) << 16UL ) | \
( ( ( uint32_t ) ( ucOctet1 ) ) << 8UL ) | \
( ( uint32_t ) ( ucOctet0 ) ) )
/**
* @brief Convert an IP address expressed as a 32-bit number in network byte order to a string in decimal dot notation.
* (for example "192.168.0.100")
*
* @param[in] ulIPAddress An IP address expressed as a 32-bit value in network byte order.
* @param[in] pucBuffer A pointer to a buffer into which the IP address will be written in decimal dot notation.
*/
#define SOCKETS_inet_ntoa( ulIPAddress, pucBuffer ) \
sprintf( ( char * ) ( pucBuffer ), "%u.%u.%u.%u", \
( ( unsigned ) ( ( ulIPAddress ) & 0xffUL ) ), \
( ( unsigned ) ( ( ( ulIPAddress ) >> 8 ) & 0xffUL ) ), \
( ( unsigned ) ( ( ( ulIPAddress ) >> 16 ) & 0xffUL ) ), \
( ( unsigned ) ( ( ulIPAddress ) >> 24 ) ) )
#else /* socketsconfigBYTE_ORDER. */
#define SOCKETS_inet_addr_quick( ucOctet0, ucOctet1, ucOctet2, ucOctet3 ) \
( ( ( ( uint32_t ) ( ucOctet0 ) ) << 24UL ) | \
( ( ( uint32_t ) ( ucOctet1 ) ) << 16UL ) | \
( ( ( uint32_t ) ( ucOctet2 ) ) << 8UL ) | \
( ( uint32_t ) ( ucOctet3 ) ) )
/**
* @brief Convert an IP address expressed as a 32-bit number in network byte order to a string in decimal dot notation.
* (for example "192.168.0.100")
*
* @param[in] ulIPAddress An IP address expressed as a 32-bit value in network byte order.
* @param[in] pucBuffer A pointer to a buffer into which the IP address will be written in decimal dot notation.
*/
#define SOCKETS_inet_ntoa( ulIPAddress, pucBuffer ) \
sprintf( ( char * ) ( pucBuffer ), "%u.%u.%u.%u", \
( ( unsigned ) ( ( ulIPAddress ) >> 24 ) ), \
( ( unsigned ) ( ( ( ulIPAddress ) >> 16 ) & 0xffUL ) ), \
( ( unsigned ) ( ( ( ulIPAddress ) >> 8 ) & 0xffUL ) ), \
( ( unsigned ) ( ( ulIPAddress ) & 0xffUL ) ) )
#endif /* socketsconfigBYTE_ORDER. */
/*
#ifdef __cplusplus
* }
#endif
*/
#endif /* _AWS_SECURE_SOCKETS_H_ */