/* BEGIN_ICS_COPYRIGHT2 ****************************************

Copyright (c) 2015-2020, Intel Corporation

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of Intel Corporation nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 * ** END_ICS_COPYRIGHT2   ****************************************/

#ifndef HSM_COM_API
#define HSM_COM_API

/* TODO:
		Define message structure?
		Define callback - provide to server_init or server_start
		Define error callback - ditto
		Define error structure
		
*/



#ifndef IN
#define IN  
#endif /* #ifndef IN */

#ifndef OUT
#define OUT
#endif /* #ifndef OUT */

#ifndef OPTIONAL
#define OPTIONAL
#endif /* #ifndef OPTIONAL */

#define HSM_COM_API_MAX_DATA	1024

			  
// C++ wrapper
#ifdef __cplusplus
extern "C"
{
#endif	/* __cplusplus */

// Error codes
typedef enum{
	HSM_COM_ERR_LEN,
	HSM_COM_ERR_VERSION,
	HSM_COM_ERR_DISC,
	HSM_COM_TEST = -1,
	HSM_COM_OK = 0,
	HSM_COM_ERROR = 1,
	HSM_COM_NO_RESOURCES = 2,
	HSM_COM_NO_MEM,
	HSM_COM_PATH_ERR,
	HSM_COM_BAD,
	HSM_COM_BIND_ERR,
	HSM_COM_SOCK_ERR,
	HSM_COM_CHMOD_ERR,
	HSM_COM_CONX_ERR,
	HSM_COM_SEND_ERR,
	HSM_COM_NOT_CONNECTED,
	HSM_COM_MAX_ERROR_NUM
}hsm_com_errno_t;


typedef enum{
	HSM_METH_GET = 1,
	HSM_METH_SET,
	HSM_METH_RSP,
}hsm_com_method_t;

// Session structures (opaque)
typedef struct _hsm_com_server_hdl	*p_hsm_com_server_hdl_t;
typedef struct _hsm_com_client_hdl	*p_hsm_com_client_hdl_t;
typedef struct _hsm_com_stream_hdl	*p_hsm_com_stream_hdl_t;

typedef struct hsm_com_datagram_s{
	int					data_len;
	int					buf_size;
	char				*buf;
}hsm_com_datagram_t;

// Server Data callback function
// Note: data is IN/OUT. 
typedef hsm_com_errno_t (*hsm_com_callback_func)(hsm_com_datagram_t *data);

// Server Error callback function
typedef void (*hsm_com_err_callback_func)(hsm_com_errno_t err);


hsm_com_errno_t
hcom_server_init
(
		OUT	p_hsm_com_server_hdl_t		*p_hdl,
	IN		char						*socket_path,
	IN		int							max_conx,		
	IN		int							max_data_len,
	IN		hsm_com_callback_func		callback
);


hsm_com_errno_t
hcom_server_terminate
(
	IN p_hsm_com_server_hdl_t p_hdl		
);



hsm_com_errno_t
hcom_server_start
(
	IN p_hsm_com_server_hdl_t p_hdl		
);


hsm_com_errno_t
hcom_server_stop
(
	IN p_hsm_com_server_hdl_t p_hdl		
);


hsm_com_errno_t
hcom_client_init
(
		OUT	p_hsm_com_client_hdl_t *p_hdl,
	IN		char					*server_path,
	IN		char					*client_path,
	IN		int						max_data_len
);

hsm_com_errno_t
hcom_client_connect
(
	IN p_hsm_com_client_hdl_t p_hdl		
);


hsm_com_errno_t
hcom_client_disconnect
(
	IN p_hsm_com_client_hdl_t p_hdl		
);



hsm_com_errno_t
hcom_client_send_ping
(
	IN	p_hsm_com_client_hdl_t	p_hdl,		
	IN	int						timeout_s
);



hsm_com_errno_t
hcom_client_send_data
(
	IN		p_hsm_com_client_hdl_t	p_hdl,
	IN		int						timeout_s,
	IN		hsm_com_datagram_t		*data,
		OUT	hsm_com_datagram_t		*res
);



hsm_com_errno_t
hcom_client_create_stream
(
		OUT	p_hsm_com_stream_hdl_t	*p_stream_hdl,
	IN		p_hsm_com_client_hdl_t	p_client_hdl,
	IN		char					*socket_path,
	IN		int						max_conx,		
	IN		int						max_data_len
);



hsm_com_errno_t
hcom_client_destroy_stream
(
	IN	p_hsm_com_stream_hdl_t	p_stream_hdl,
	IN	p_hsm_com_client_hdl_t	p_client_hdl
);



#ifdef __cplusplus
}
#endif	/* __cplusplus */

#endif /*HSM_COM_API*/