/**************************************************************************************************
 
  Phyplus Microelectronics Limited confidential and proprietary. 
  All rights reserved.

  IMPORTANT: All rights of this software belong to Phyplus Microelectronics 
  Limited ("Phyplus"). Your use of this Software is limited to those 
  specific rights granted under  the terms of the business contract, the 
  confidential agreement, the non-disclosure agreement and any other forms 
  of agreements as a customer or a partner of Phyplus. You may not use this 
  Software unless you agree to abide by the terms of these agreements. 
  You acknowledge that the Software may not be modified, copied, 
  distributed or disclosed unless embedded on a Phyplus Bluetooth Low Energy 
  (BLE) integrated circuit, either as a product or is integrated into your 
  products.  Other than for the aforementioned purposes, you may not use, 
  reproduce, copy, prepare derivative works of, modify, distribute, perform, 
  display or sell this Software and/or its documentation for any purposes.

  YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
  PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
  INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
  NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
  PHYPLUS OR ITS SUBSIDIARIES BE LIABLE OR OBLIGATED UNDER CONTRACT,
  NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
  LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
  INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
  OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
  OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
  (INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
  
**************************************************************************************************/

/**************************************************************************************************
**************************************************************************************************/

#ifndef SMP_H
#define SMP_H

#ifdef __cplusplus
extern "C"
{
#endif

/*********************************************************************
 * INCLUDES
 */
#include "bcomdef.h"
  
#include "sm_internal.h"

/*********************************************************************
 * MACROS
 */

/*********************************************************************
 * CONSTANTS
 */
  
// Code field of the SMP Command format
#define SMP_PAIRING_REQ                           0x01
#define SMP_PAIRING_RSP                           0x02
#define SMP_PAIRING_CONFIRM                       0x03
#define SMP_PAIRING_RANDOM                        0x04
#define SMP_PAIRING_FAILED                        0x05
#define SMP_ENCRYPTION_INFORMATION                0x06
#define SMP_MASTER_IDENTIFICATION                 0x07  
#define SMP_IDENTITY_INFORMATION                  0x08
#define SMP_IDENTITY_ADDR_INFORMATION             0x09
#define SMP_SIGNING_INFORMATION                   0x0A
#define SMP_SECURITY_REQUEST                      0x0B

// Pairing Request & Response - IO Capabilities  
#define SMP_IO_CAP_DISPLAY_ONLY                   0x00
#define SMP_IO_CAP_DISPLAY_YES_NO                 0x01
#define SMP_IO_CAP_KEYBOARD_ONLY                  0x02
#define SMP_IO_CAP_NO_INPUT_NO_OUTPUT             0x03
#define SMP_IO_CAP_KEYBOARD_DISPLAY               0x04
  
// Pairing Request & Response - Out Of Bound (OOB) data flag values
#define SMP_OOB_AUTH_DATA_NOT_PRESENT             0x00
#define SMP_OOB_AUTH_DATA_REMOTE_DEVICE_PRESENT   0x01
  
// Pairing Request & Response - authReq field 
//   - This field contains 2 sub-fields:
//      bonding flags - bits 1 & 0
#define SMP_AUTHREQ_BONDING                       0x01
//      Man-In-The-Middle (MITM) - bit 2
#define SMP_AUTHREQ_MITM                          0x04
  
#define SMP_CONFIRM_LEN                           16
#define SMP_RANDOM_LEN                            16
  
// Pairing Failed - "reason" field
#define SMP_PAIRING_FAILED_PASSKEY_ENTRY_FAILED   0x01 //!< The user input of the passkey failed, for example, the user cancelled the operation.
#define SMP_PAIRING_FAILED_OOB_NOT_AVAIL          0x02 //!< The OOB data is not available
#define SMP_PAIRING_FAILED_AUTH_REQ               0x03 //!< The pairing procedure can't be performed as authentication requirements can't be met due to IO capabilities of one or both devices
#define SMP_PAIRING_FAILED_CONFIRM_VALUE          0x04 //!< The confirm value doesn't match the calculated compare value
#define SMP_PAIRING_FAILED_NOT_SUPPORTED          0x05 //!< Pairing isn't supported by the device
#define SMP_PAIRING_FAILED_ENC_KEY_SIZE           0x06 //!< The resultant encryption key size is insufficient for the security requirements of this device.
#define SMP_PAIRING_FAILED_CMD_NOT_SUPPORTED      0x07 //!< The SMP command received is not supported on this device.
#define SMP_PAIRING_FAILED_UNSPECIFIED            0x08 //!< Pairing failed due to an unspecified reason
#define SMP_PAIRING_FAILED_REPEATED_ATTEMPTS      0x09 //!< Pairing or authenication procedure is disallowed because too little time has elapsed since the last pairing request or security request.
  
#define SMP_PAIRING_FAILED_LOCAL_KEY_FAILURE      0x0A    // Local value - not sent over the air

// Message lengths  
#define SMP_PAIRING_REQ_LEN                       7
#define SMP_PAIRING_RSP_LEN                       7
#define SMP_PAIRING_CONFIRM_LEN                   17
#define SMP_PAIRING_RANDOM_LEN                    17
#define SMP_PAIRING_FAILED_LEN                    2
#define SMP_ENCRYPTION_INFORMATION_LEN            17
#define SMP_MASTER_IDENTIFICATION_LEN             11
#define SMP_IDENTITY_INFORMATION_LEN              17
#define SMP_IDENTITY_ADDR_INFORMATION_LEN         8
#define SMP_SIGNING_INFORMATION_LEN               17
#define SMP_SECURITY_REQUEST_LEN                  2
  
// Macros to use the smSendSMMsg() function to send all of the Security Manager Protocol messages  
#define smSendPairingReq( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_PAIRING_REQ_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildPairingReq) )

#define smSendPairingRsp( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_PAIRING_RSP_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildPairingRsp) )

#define smSendPairingConfirm( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_PAIRING_CONFIRM_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildPairingConfirm) )

#define smSendPairingRandom( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_PAIRING_RANDOM_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildPairingRandom) )

#define smSendPairingFailed( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_PAIRING_FAILED_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildPairingFailed) )

#define smSendEncInfo( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_ENCRYPTION_INFORMATION_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildEncInfo) )

#define smSendMasterID( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_MASTER_IDENTIFICATION_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildMasterID) )

#define smSendIdentityInfo( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_IDENTITY_INFORMATION_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildIdentityInfo) )

#define smSendIdentityAddrInfo( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_IDENTITY_ADDR_INFORMATION_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildIdentityAddrInfo) )
  
#define smSendSigningInfo( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_SIGNING_INFORMATION_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildSigningInfo) )

#define smSendSecurityReq( connHandle, msgStruct )  \
        smSendSMMsg( (connHandle), SMP_SECURITY_REQUEST_LEN, \
                      (smpMsgs_t *)(msgStruct), \
                      (pfnSMBuildCmd_t)(smpBuildSecurityReq) )

/*********************************************************************
 * TYPEDEFS
 */
  
// Pairing Request
typedef struct
{
  uint8 ioCapability;   // ex. SMP_IO_CAP_DISPLAY_YES_NO
  uint8 oobDataFlag;    // Out of Bound data flag
  authReq_t authReq;    // Authentication fields
  uint8 maxEncKeySize;  // Encryption Key size max bytes (7 - 16)
  keyDist_t keyDist;    // Key Distribution Field - bit struct
} smpPairingReq_t;

// Pairing Response - same as Pairing Request
typedef smpPairingReq_t smpPairingRsp_t;

// Pairing Confirm
typedef struct
{
  uint8 confirmValue[SMP_CONFIRM_LEN];
} smpPairingConfirm_t;

// Pairing Random
typedef struct
{
  uint8 randomValue[SMP_RANDOM_LEN];
} smpPairingRandom_t;

// Pairing Failed
typedef struct
{
  uint8 reason;
} smpPairingFailed_t;

// Encryption Information
typedef struct
{
  uint8  ltk[KEYLEN];  
} smpEncInfo_t;

// Master Identification
typedef struct
{
  uint16  ediv;
  uint16  rand[B_RANDOM_NUM_SIZE];
} smpMasterID_t;

// Identity Information
typedef struct
{
  uint8 irk[KEYLEN];
} smpIdentityInfo_t;

// Identity Address Information
typedef struct
{
  uint8 addrType;
  uint8 bdAddr[B_ADDR_LEN];
} smpIdentityAddrInfo_t;

// Signing Information
typedef struct
{
  uint8 signature[KEYLEN];
} smpSigningInfo_t;

// Slave Security Request
typedef struct
{
  authReq_t authReq;  
} smpSecurityReq_t;

// Union with all of the SM messages.
typedef union
{
  smpPairingReq_t       pairingReq;
  smpPairingReq_t       pairingRsp;
  smpPairingConfirm_t   pairingConfirm;
  smpPairingRandom_t    pairingRandom;
  smpPairingFailed_t    pairingFailed;
  smpEncInfo_t          encInfo;
  smpMasterID_t         masterID;
  smpIdentityInfo_t     idInfo;
  smpIdentityAddrInfo_t idAddrInfo;
  smpSigningInfo_t      signingInfo;
  smpSecurityReq_t      secReq;
} smpMsgs_t;

typedef uint8 (*pfnSMBuildCmd_t)( smpMsgs_t *pMsgStruct, uint8 *pBuf );

/*********************************************************************
 * GLOBAL VARIABLES
 */
extern smpPairingReq_t pairingReg;

/*********************************************************************
 * FUNCTIONS
 */

  /*
   * smpBuildPairingReq - Build an SM Pairing Request
   */
  extern bStatus_t smpBuildPairingReq( smpPairingReq_t *pPairingReq, uint8 *pBuf );

  /*
   * smpBuildPairingRsp - Build an SM Pairing Response
   */
  extern bStatus_t smpBuildPairingRsp( smpPairingRsp_t *pPairingRsp, uint8 *pBuf );

  /*
   * smpBuildPairingReqRsp - Build an SM Pairing Request or Response
   */
  extern bStatus_t smpBuildPairingReqRsp( uint8 opCode, smpPairingReq_t *pPairingReq, uint8 *pBuf );

  /*
   * smpParsePairingReq - Parse an SM Pairing Request
   */
  extern bStatus_t smpParsePairingReq( uint8 *pBuf, smpPairingReq_t *pPairingReq );

  /*
   * smpParsePairingRsp - Parse an SM Pairing Response
   */
  #define smpParsePairingRsp( a, b ) smpParsePairingReq( (a), (b) )
  
  /*
   * smpBuildPairingConfirm - Build an SM Pairing Confirm
   */
  extern bStatus_t smpBuildPairingConfirm( smpPairingConfirm_t *pPairingConfirm, 
                                 uint8 *pBuf );
  
  /*
   * smpParsePairingConfirm - Parse an SM Pairing Confirm
   */
  extern bStatus_t smpParsePairingConfirm( uint8 *pBuf, 
                                 smpPairingConfirm_t *pPairingConfirm );
  
  /*
   * smpBuildPairingRandom - Build an SM Pairing Random
   */
  extern bStatus_t smpBuildPairingRandom( smpPairingRandom_t *pPairingRandom, 
                                 uint8 *pBuf );

  /*
   * smpParsePairingRandom - Parse an SM Pairing Random
   */
  extern bStatus_t smpParsePairingRandom( uint8 *pBuf, 
                                 smpPairingRandom_t *pPairingRandom );
  
  /*
   * smpBuildPairingFailed - Build an SM Pairing Failed
   */
  extern bStatus_t smpBuildPairingFailed( smpPairingFailed_t *pPairingFailed, 
                                 uint8 *pBuf );

  /*
   * smpParsePairingFailed - Parse an SM Pairing Failed
   */
  extern bStatus_t smpParsePairingFailed( uint8 *pBuf, 
                                 smpPairingFailed_t *pPairingFailed );
  
  /*
   * smpBuildEncInfo - Build an SM Encryption Information
   */
  extern bStatus_t smpBuildEncInfo( smpEncInfo_t *pEncInfo, uint8 *pBuf );

  /*
   * smpParseEncInfo - Parse an SM Encryption Information
   */
  extern bStatus_t smpParseEncInfo( uint8 *buf, smpEncInfo_t *encInfo );
  
  /*
   * smpBuildMasterID - Build an SM Master Identification
   */
  extern bStatus_t smpBuildMasterID( smpMasterID_t *pMasterID, uint8 *pBuf );
  
  /*
   * smpParseMasterID - Parse an SM Master Identification
   */
  extern bStatus_t smpParseMasterID( uint8 *pBuf, smpMasterID_t *pMasterID );
  
  /*
   * smpBuildIdentityInfo - Build an SM Identity Information
   */
  extern bStatus_t smpBuildIdentityInfo( smpIdentityInfo_t *pIdInfo, uint8 *pBuf );

  /*
   * smpBuildIdentityAddrInfo - Build an SM Identity Address Information
   */
  extern bStatus_t smpBuildIdentityAddrInfo( smpIdentityAddrInfo_t *pIdInfo, uint8 *pBuf );

  /*
   * smpParseIdentityInfo - Parse an SM Identity Information
   */
  extern bStatus_t smpParseIdentityInfo( uint8 *pBuf, smpIdentityInfo_t *pIdInfo );
  
  /*
   * smpParseIdentityAddrInfo - Parse an SM Identity Address Information
   */
  extern bStatus_t smpParseIdentityAddrInfo( uint8 *pBuf, smpIdentityAddrInfo_t *pIdInfo );
  
  /*
   * smpBuildSigningInfo - Build an SM Signing Information
   */
  extern bStatus_t smpBuildSigningInfo( smpSigningInfo_t *pSigningInfo, uint8 *pBuf );

  /*
   * smpParseSigningInfo - Parse an SM Signing Information
   */
  extern bStatus_t smpParseSigningInfo( uint8 *pBuf, smpSigningInfo_t *pSigningInfo );
  
  /*
   * smpBuildSecurityReq - Build an SM Slave Security Request
   */
  extern bStatus_t smpBuildSecurityReq( smpSecurityReq_t *pSecReq, uint8 *pBuf );

  /*
   * smpParseSecurityReq - Parse an SM Slave Security Request
   */
  extern bStatus_t smpParseSecurityReq( uint8 *pBuf, smpSecurityReq_t *pSecReq );
  
  /*
   * smSendSMMsg - Generic Send L2CAP SM message function
   */
  extern bStatus_t smSendSMMsg( uint16 connHandle, uint8 bufLen, smpMsgs_t *pMsg, pfnSMBuildCmd_t buildFn );

/*********************************************************************
*********************************************************************/

#ifdef __cplusplus
}
#endif

#endif /* SMP_H */