/*
 * Copyright (C) 2011-2017 Intel Corporation. All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */



#ifndef _SERVICE_PROVIDER_H
#define _SERVICE_PROVIDER_H

#include "remote_attestation_result.h"
#include "ias_ra.h"
#include "network_ra.h"

#ifdef  __cplusplus
extern "C" {
#endif

typedef enum {
    SP_OK,
    SP_UNSUPPORTED_EXTENDED_EPID_GROUP,
    SP_INTEGRITY_FAILED,
    SP_QUOTE_VERIFICATION_FAILED,
    SP_IAS_FAILED,
    SP_INTERNAL_ERROR,
    SP_PROTOCOL_ERROR,
    SP_QUOTE_VERSION_ERROR,
} sp_ra_msg_status_t;

#pragma pack(push,1)

#define SAMPLE_SP_TAG_SIZE       16
#define SAMPLE_SP_IV_SIZE        12

typedef struct sample_ec_pub_t
{
    uint8_t gx[SAMPLE_ECP_KEY_SIZE];
    uint8_t gy[SAMPLE_ECP_KEY_SIZE];
} sample_ec_pub_t;

/*fixed length to align with internal structure*/
typedef struct sample_ps_sec_prop_desc_t
{
    uint8_t  sample_ps_sec_prop_desc[256];
} sample_ps_sec_prop_desc_t;

#pragma pack(pop)

typedef uint32_t                sample_ra_context_t;

typedef uint8_t                 sample_key_128bit_t[16];

typedef sample_key_128bit_t     sample_ra_key_128_t;

typedef struct sample_ra_msg0_t
{
    uint32_t                    extended_epid_group_id;
} sample_ra_msg0_t;


typedef struct sample_ra_msg1_t
{
    sample_ec_pub_t             g_a;        /* the Endian-ness of Ga is
                                                 Little-Endian*/
    sample_epid_group_id_t      gid;        /* the Endian-ness of GID is
                                                 Little-Endian*/
} sample_ra_msg1_t;

/*Key Derivation Function ID : 0x0001  AES-CMAC Entropy Extraction and Key Expansion*/
const uint16_t SAMPLE_AES_CMAC_KDF_ID = 0x0001;

typedef struct sample_ra_msg2_t
{
    sample_ec_pub_t             g_b;        /* the Endian-ness of Gb is
                                                  Little-Endian*/
    sample_spid_t               spid;       /* In little endian*/
    uint16_t                    quote_type; /* unlinkable Quote(0) or linkable Quote(0) in little endian*/
    uint16_t                    kdf_id;     /* key derivation function id in little endian. 
                                             0x0001 for AES-CMAC Entropy Extraction and Key Derivation */
    sample_ec_sign256_t         sign_gb_ga; /* In little endian*/
    sample_mac_t                mac;        /* mac_smk(g_b||spid||quote_type||
                                                       sign_gb_ga)*/
    uint32_t                    sig_rl_size;
    uint8_t                     sig_rl[];
} sample_ra_msg2_t;

typedef struct sample_ra_msg3_t
{
    sample_mac_t                mac;           /* mac_smk(g_a||ps_sec_prop||quote)*/
    sample_ec_pub_t             g_a;           /* the Endian-ness of Ga is*/
                                               /*  Little-Endian*/
    sample_ps_sec_prop_desc_t   ps_sec_prop;
    uint8_t                     quote[];
} sample_ra_msg3_t;

int sp_ra_proc_msg0_req(const sample_ra_msg0_t *p_msg0,
    uint32_t msg0_size);

int sp_ra_proc_msg1_req(const sample_ra_msg1_t *p_msg1,
						uint32_t msg1_size,
						ra_samp_response_header_t **pp_msg2);

int sp_ra_proc_msg3_req(const sample_ra_msg3_t *p_msg3,
                        uint32_t msg3_size,
                        ra_samp_response_header_t **pp_att_result_msg);

int sp_ra_free_msg2(
    sample_ra_msg2_t *p_msg2);



typedef int (*sample_enroll)(int sp_credentials, sample_spid_t* spid,
    int* authentication_token);

typedef int(*sample_get_sigrl)(const sample_epid_group_id_t gid, uint32_t* p_sig_rl_size,
    uint8_t** p_sig_rl);

typedef int(*sample_verify_attestation_evidence)(sample_quote_t* p_isv_quote,
    uint8_t* pse_manifest,
    ias_att_report_t* attestation_verification_report);


typedef struct sample_extended_epid_group
{
    uint32_t extended_epid_group_id;
    sample_enroll enroll;
    sample_get_sigrl get_sigrl;
    sample_verify_attestation_evidence verify_attestation_evidence;
} sample_extended_epid_group;

#ifdef  __cplusplus
}
#endif

#endif