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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include "sd-dhcp-client-id.h"
#include "dhcp-duid-internal.h"
#include "macro.h"
#include "siphash24.h"
#include "sparse-endian.h"
/* RFC 2132 section 9.14: its minimum length is 2.
* Note, its maximum is not mentioend in the RFC. Hence, 255. */
#define MIN_CLIENT_ID_LEN 2
#define MAX_CLIENT_ID_LEN 255
#define MIN_CLIENT_ID_DATA_LEN (MIN_CLIENT_ID_LEN - sizeof(uint8_t))
#define MAX_CLIENT_ID_DATA_LEN (MAX_CLIENT_ID_LEN - sizeof(uint8_t))
typedef struct sd_dhcp_client_id {
size_t size;
union {
struct {
uint8_t type;
union {
struct {
/* 0: Generic (non-LL) (RFC 2132) */
uint8_t data[MAX_CLIENT_ID_DATA_LEN];
} _packed_ gen;
struct {
/* 1: Ethernet Link-Layer (RFC 2132) */
uint8_t haddr[ETH_ALEN];
} _packed_ eth;
struct {
/* 2 - 254: ARP/Link-Layer (RFC 2132) */
uint8_t haddr[0];
} _packed_ ll;
struct {
/* 255: Node-specific (RFC 4361) */
be32_t iaid;
struct duid duid;
} _packed_ ns;
uint8_t data[MAX_CLIENT_ID_DATA_LEN];
};
} _packed_ id;
uint8_t raw[MAX_CLIENT_ID_LEN];
};
} sd_dhcp_client_id;
static inline bool client_id_size_is_valid(size_t size) {
return size >= MIN_CLIENT_ID_LEN && size <= MAX_CLIENT_ID_LEN;
}
static inline bool client_id_data_size_is_valid(size_t size) {
return size >= MIN_CLIENT_ID_DATA_LEN && size <= MAX_CLIENT_ID_DATA_LEN;
}
void client_id_hash_func(const sd_dhcp_client_id *client_id, struct siphash *state);
int client_id_compare_func(const sd_dhcp_client_id *a, const sd_dhcp_client_id *b);
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