text: /*
   * Copyright (c) 2017-2019, Pelion and affiliates.
   * SPDX-License-Identifier: Apache-2.0
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #ifndef PANA_AVP_H_
  #define PANA_AVP_H_
  
  #define PANA_EAP_VENDOR_FLAG 0x8000
  
  #define AVP_AUTHENCY_CODE               1
  #define AVP_EAP_PAYLOAD_CODE            2
  #define AVP_INTEGRIRTY_ALGORYTHM_CODE   3
  #define AVP_KEY_ID_CODE                 4
  #define AVP_NONCE_CODE                  5
  #define AVP_PRF_ALGORYTHM_CODE          6
  #define AVP_RESULT_CODE                 7
  #define AVP_SESSION_LIFETIME_CODE       8
  /**
   * Pana relay AVP's
   */
  #define AVP_PAC_INFO_CODE               10
  #define AVP_RELAY_MSG_CODE              11
  
  /**
   * Define Key delivery method
   */
  #define AVP_KEY_WRAP_ALG_CODE           12
  /**
   * Key delivery AVP's which are encrypted at message
   */
  #define AVP_ENCRYPT_ALGORITHM_CODE      13
  
  
  /****************************************
   * Pana AVP Base
   *
   * Code     Flags   Length  RESErved
   * 16-bit   16-bit  16-bit  16-bit
   *
   */
  
  typedef struct {
      uint32_t vendor_id;
      uint16_t code;
      uint16_t flags;
      uint16_t len;
      uint8_t *avp_ptr;
  } pana_avp_t;
  
  uint8_t *pana_avp_base_write(uint8_t avp_type, uint16_t length, uint8_t *dptr, uint16_t flags, uint32_t vendor_id);
  
  uint8_t *pana_avp_32_bit_write(uint8_t avp_type, uint32_t value, uint8_t *dptr);
  /**
   * Write AVP header and data also if value is not NULL
   *
   * Add automatically padding's for word size 4
   *
   * \return pointer end of message
   */
  uint8_t *pana_avp_write_n_bytes(uint16_t avp_type, uint16_t length, const uint8_t *value, uint8_t *dptr);
  
  /**
   * Write AVP header with vendor id and data also if value is not NULL
   *
   * Add automatically padding's for word size 4
   *
   * \return pointer end of message
   */
  uint8_t *pana_avp_vendor_id_write_n_bytes(uint16_t avp_type, uint16_t length, const uint8_t *value, uint8_t *dptr, uint32_t vendor_id);
  
  bool pana_avp_discover(uint8_t *dptr, uint16_t data_len, pana_avp_t *avp);
  
  #endif /* PANA_AVP_H_ */
  