116 lines
4.9 KiB
C
116 lines
4.9 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#ifndef TLV_ENCODER_H_
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#define TLV_ENCODER_H_
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#include <arpa/inet.h> // htonl, htons
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#define ENCODE_U8(buffer, value, size) \
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do { \
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*(uint8_t*)(buffer) = value; \
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size += sizeof(uint8_t); \
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} while (0)
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/* Safely encodes a 16-bit value into a buffer, handling
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misalignment by memcpy 2 bytes to buffer in network
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byte order (big-endian). */
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#define ENCODE_U16(buffer, value, size) \
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do { \
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uint16_t _val = htons(value); \
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memcpy((buffer), &_val, sizeof(uint16_t)); \
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size += sizeof(uint16_t); \
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} while (0)
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/* Safely encodes a 24-bit value into a buffer, handling
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misalignment by using htonl and memcpy to copy 3 bytes
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in network byte order (big-endian). */
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#define ENCODE_U24(buffer, value, size) \
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do { \
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uint32_t _val = htonl(value); \
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memcpy((buffer), ((uint8_t*)&_val) + 1, 3); \
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size += sizeof(uint8_t) + sizeof(uint16_t); \
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} while (0)
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#define ENCODE_U32(buffer, value, size) \
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do { \
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uint32_t tmp = htonl(value); \
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memcpy(buffer, &tmp, sizeof(tmp)); \
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size += sizeof(uint32_t); \
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} while (0)
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#define IES_ENCODE_U8(buffer, encoded, value) \
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ENCODE_U8(buffer + encoded, value, encoded)
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#define IES_ENCODE_U16(buffer, encoded, value) \
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ENCODE_U16(buffer + encoded, value, encoded)
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#define IES_ENCODE_U24(buffer, encoded, value) \
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ENCODE_U24(buffer + encoded, value, encoded)
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#define IES_ENCODE_U32(buffer, encoded, value) \
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ENCODE_U32(buffer + encoded, value, encoded)
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typedef enum {
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TLV_ENCODE_ERROR_OK = 0,
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TLV_ENCODE_VALUE_DOESNT_MATCH = -1,
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/* Fatal errors - message should not be sent */
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TLV_ENCODE_OCTET_STRING_TOO_LONG_FOR_IEI = -10,
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TLV_ENCODE_WRONG_MESSAGE_TYPE = -11,
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TLV_ENCODE_PROTOCOL_NOT_SUPPORTED = -12,
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TLV_ENCODE_BUFFER_TOO_SHORT = -13,
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TLV_ENCODE_BUFFER_NULL = -14,
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} tlv_encoder_error_code;
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/* Defines error code limit below which message should be sent because
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* it cannot be further processed */
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#define TLV_ENCODE_FATAL_ERROR (TLV_ENCODE_VALUE_DOESNT_MATCH)
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extern int errorCodeEncoder;
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void tlv_encode_perror(void);
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#define CHECK_PDU_POINTER_AND_LENGTH_ENCODER(bUFFER, mINIMUMlENGTH, lENGTH) \
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if (bUFFER == NULL) \
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{ \
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printf("Got NULL pointer for the payload\n"); \
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errorCodeEncoder = TLV_ENCODE_BUFFER_NULL; \
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return TLV_ENCODE_BUFFER_NULL; \
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} \
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if (lENGTH < mINIMUMlENGTH) \
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{ \
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printf("(%s:%d) Expecting at least %d bytes, got %u\n", \
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__FILE__, __LINE__, mINIMUMlENGTH, lENGTH); \
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errorCodeEncoder = TLV_ENCODE_BUFFER_TOO_SHORT; \
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return TLV_ENCODE_BUFFER_TOO_SHORT; \
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}
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#define CHECK_PDU_POINTER_ENCODER(bUFFER) \
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if (bUFFER == NULL) \
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{ \
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printf("Got NULL pointer for the payload\n"); \
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errorCodeEncoder = TLV_ENCODE_BUFFER_NULL; \
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return TLV_ENCODE_BUFFER_NULL; \
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}
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#endif /* define (TLV_ENCODER_H_) */
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