/*
 * FreeRTOS V202212.00
 * Copyright (C) 2020 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.
 *
 * https://www.FreeRTOS.org
 * https://github.com/FreeRTOS
 *
 */

/*
 *  Some code which is common to TCP servers like HTTP en FTP
 */

#ifndef FREERTOS_TCP_SERVER_H
    #define FREERTOS_TCP_SERVER_H

    #ifdef __cplusplus
    extern "C" {
    #endif

    #ifndef FTP_SERVER_USES_RELATIVE_DIRECTORY
        #define FTP_SERVER_USES_RELATIVE_DIRECTORY    0
    #endif

    enum eSERVER_TYPE
    {
        eSERVER_NONE,
        eSERVER_HTTP,
        eSERVER_FTP,
    };

    struct xFTP_CLIENT;

    #if ( ipconfigFTP_HAS_RECEIVED_HOOK != 0 )
        extern void vApplicationFTPReceivedHook( const char * pcFileName,
                                                 uint32_t ulSize,
                                                 struct xFTP_CLIENT * pxFTPClient );
        extern void vFTPReplyMessage( struct xFTP_CLIENT * pxFTPClient,
                                      const char * pcMessage );
    #endif /* ipconfigFTP_HAS_RECEIVED_HOOK != 0 */

    #if ( ipconfigFTP_HAS_USER_PASSWORD_HOOK != 0 )

/*
 * Function is called when a user name has been submitted.
 * The function may return a string such as: "331 Please enter your password"
 * or return NULL to use the default reply.
 */
        extern const char * pcApplicationFTPUserHook( const char * pcUserName );
    #endif /* ipconfigFTP_HAS_USER_PASSWORD_HOOK */

    #if ( ipconfigFTP_HAS_USER_PASSWORD_HOOK != 0 )

/*
 * Function is called when a password was received.
 * Return positive value to allow the user
 */
        extern BaseType_t xApplicationFTPPasswordHook( const char * pcUserName,
                                                       const char * pcPassword );
    #endif /* ipconfigFTP_HAS_USER_PASSWORD_HOOK */

    #if ( ipconfigFTP_HAS_USER_PROPERTIES_HOOK != 0 )

/*
 * The FTP server is asking for user-specific properties
 */
        typedef struct
        {
            uint16_t usPortNumber; /* For reference only. Host-endian. */
            const char * pcRootDir;
            BaseType_t xReadOnly;
        }
        FTPUserProperties_t;
        extern void vApplicationFTPUserPropertiesHook( const char * pcUserName,
                                                       FTPUserProperties_t * pxProperties );
    #endif /* ipconfigFTP_HAS_USER_PASSWORD_HOOK */

    #if ( ipconfigHTTP_HAS_HANDLE_REQUEST_HOOK != 0 )

/*
 * A GET request is received containing a special character,
 * usually a question mark.
 * const char *pcURLData;	// A request, e.g. "/request?limit=75"
 * char *pcBuffer;			// Here the answer can be written
 * size_t uxBufferLength;	// Size of the buffer
 *
 */
        extern size_t uxApplicationHTTPHandleRequestHook( const char * pcURLData,
                                                          char * pcBuffer,
                                                          size_t uxBufferLength );
    #endif /* ipconfigHTTP_HAS_HANDLE_REQUEST_HOOK */

    struct xSERVER_CONFIG
    {
        enum eSERVER_TYPE eType;      /* eSERVER_HTTP | eSERVER_FTP */
        BaseType_t xPortNumber;       /* e.g. 80, 8080, 21 */
        BaseType_t xBackLog;          /* e.g. 10, maximum number of connected TCP clients */
        const char * const pcRootDir; /* Treat this directory as the root directory */
    };

    struct xTCP_SERVER;
    typedef struct xTCP_SERVER TCPServer_t;

    TCPServer_t * FreeRTOS_CreateTCPServer( const struct xSERVER_CONFIG * pxConfigs,
                                            BaseType_t xCount );
    void FreeRTOS_TCPServerWork( TCPServer_t * pxServer,
                                 TickType_t xBlockingTime );

    #if ( ipconfigSUPPORT_SIGNALS != 0 )

/* FreeRTOS_TCPServerWork() calls select().
 * The two functions below provide a possibility to interrupt
 * the call to select(). After the interruption, resume
 * by calling FreeRTOS_TCPServerWork() again. */
        BaseType_t FreeRTOS_TCPServerSignal( TCPServer_t * pxServer );
        BaseType_t FreeRTOS_TCPServerSignalFromISR( TCPServer_t * pxServer,
                                                    BaseType_t * pxHigherPriorityTaskWoken );
    #endif

    #ifdef __cplusplus
} /* extern "C" */
    #endif

#endif /* FREERTOS_TCP_SERVER_H */