2019-09-13 12:07:47 +00:00
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/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#if !defined(OGS_GTP_INSIDE) && !defined(OGS_GTP_COMPILATION)
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#error "This header cannot be included directly."
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#endif
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#ifndef OGS_GTP_TLV_H
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#define OGS_GTP_TLV_H
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define OGS_TLV_MAX_HEADROOM 16
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#define OGS_TLV_VARIABLE_LEN 0
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#define OGS_TLV_MAX_MORE 8
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#define OGS_TLV_1_OR_MORE(__v) __v[OGS_TLV_MAX_MORE]
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#define OGS_TLV_MAX_CHILD_DESC 128
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typedef enum {
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OGS_TLV_UINT8,
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OGS_TLV_UINT16,
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OGS_TLV_UINT24,
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OGS_TLV_UINT32,
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OGS_TLV_INT8,
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OGS_TLV_INT16,
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OGS_TLV_INT24,
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OGS_TLV_INT32,
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OGS_TLV_FIXED_STR,
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OGS_TLV_VAR_STR,
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OGS_TLV_NULL,
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OGS_TLV_MORE,
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OGS_TLV_COMPOUND,
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OGS_TLV_MESSAGE,
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} ogs_tlv_type_e;
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typedef struct ogs_tlv_desc_s {
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ogs_tlv_type_e ctype;
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2019-10-27 08:41:14 +00:00
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const char *name;
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2019-09-13 12:07:47 +00:00
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uint16_t type;
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uint16_t length;
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uint8_t instance;
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uint16_t vsize;
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void *child_descs[OGS_TLV_MAX_CHILD_DESC];
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} ogs_tlv_desc_t;
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extern ogs_tlv_desc_t ogs_tlv_desc_more1;
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extern ogs_tlv_desc_t ogs_tlv_desc_more2;
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extern ogs_tlv_desc_t ogs_tlv_desc_more3;
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extern ogs_tlv_desc_t ogs_tlv_desc_more4;
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extern ogs_tlv_desc_t ogs_tlv_desc_more5;
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extern ogs_tlv_desc_t ogs_tlv_desc_more6;
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extern ogs_tlv_desc_t ogs_tlv_desc_more7;
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extern ogs_tlv_desc_t ogs_tlv_desc_more8;
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typedef uint64_t ogs_tlv_presence_t;
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/* 8-bit Unsigned integer */
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typedef struct ogs_tlv_uint8_s {
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ogs_tlv_presence_t presence;
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uint8_t u8;
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} ogs_tlv_uint8_t;
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/* 16-bit Unsigned integer */
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typedef struct ogs_tlv_uint16_s {
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ogs_tlv_presence_t presence;
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uint16_t u16;
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} ogs_tlv_uint16_t;
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/* 24-bit Unsigned integer */
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typedef struct ogs_tlv_uint24_s {
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ogs_tlv_presence_t presence;
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uint32_t u24; /* Only 3 bytes valid */
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} ogs_tlv_uint24_t;
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/* 32-bit Unsigned integer */
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typedef struct ogs_tlv_uint32_s {
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ogs_tlv_presence_t presence;
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uint32_t u32;
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} ogs_tlv_uint32_t;
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/* 8-bit Signed integer */
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typedef struct ogs_tlv_int8_s {
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ogs_tlv_presence_t presence;
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int8_t i8;
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} ogs_tlv_int8_t;
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/* 16-bit Signed integer */
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typedef struct ogs_tlv_int16_s {
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ogs_tlv_presence_t presence;
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int16_t i16;
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} ogs_tlv_int16_t;
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/* 24-bit Signed integer */
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typedef struct tlv_int24_s {
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ogs_tlv_presence_t presence;
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int32_t i24; /* Only 3 bytes valid */
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} tlv_int24_t;
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/* 32-bit Signed integer */
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typedef struct ogs_tlv_int32_s {
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ogs_tlv_presence_t presence;
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int32_t i32;
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} ogs_tlv_int32_t;
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/* Octets */
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#define OGS_TLV_CLEAR_DATA(__dATA) \
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do { \
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ogs_assert((__dATA)); \
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if ((__dATA)->data) \
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{ \
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ogs_free((__dATA)->data); \
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(__dATA)->data = NULL; \
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(__dATA)->len = 0; \
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(__dATA)->presence = 0; \
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} \
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} while(0)
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#define OGS_TLV_STORE_DATA(__dST, __sRC) \
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do { \
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ogs_assert((__sRC)); \
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ogs_assert((__sRC)->data); \
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ogs_assert((__dST)); \
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OGS_TLV_CLEAR_DATA(__dST); \
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(__dST)->presence = (__sRC)->presence; \
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(__dST)->len = (__sRC)->len; \
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(__dST)->data = ogs_calloc((__dST)->len, sizeof(uint8_t)); \
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memcpy((__dST)->data, (__sRC)->data, (__dST)->len); \
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} while(0)
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typedef struct ogs_tlv_octet_s {
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ogs_tlv_presence_t presence;
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void *data;
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uint32_t len;
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} ogs_tlv_octet_t;
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/* No value */
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typedef struct ogs_tlv_null_s {
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ogs_tlv_presence_t presence;
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} ogs_tlv_null_t;
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int ogs_tlv_build_msg(ogs_pkbuf_t **pkbuf, ogs_tlv_desc_t *desc, void *msg,
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int mode);
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int ogs_tlv_parse_msg(void *msg, ogs_tlv_desc_t *desc, ogs_pkbuf_t *pkbuf,
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int mode);
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#ifdef __cplusplus
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}
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#endif
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#endif /* OGS_GTP_TLV_H */
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