127 lines
2.8 KiB
C
127 lines
2.8 KiB
C
#ifndef TLV_H
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#define TLV_H
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <stdlib.h>
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#include <stdint.h>
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#define LEN_NEIGHBOUR_REQ 0
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#define LEN_NEIGHBOUR 18
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#define LEN_NETWORK_HASH 16
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#define LEN_NETWORK_STATE_REQ 0
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#define LEN_NODE_HASH 26
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#define LEN_NODE_STATE_REQ 8
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#define MIN_LEN_NODE_STATE 26
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#define MAX_LEN_NODE_STATE 218
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// 8 octets min (struct pointer 4 octets), 1024 octets max
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typedef struct packet {
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unsigned char magic; // 95 (si autre, ignorer)
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unsigned char version; // 1 (si autre, ignorer)
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uint16_t length; // 1020 max
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char body[1020];
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} packet;
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// 1 octet
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typedef struct pad1 {
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unsigned char type;
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} pad1;
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// 2 octets min, 258 octets max (unsigned char 0 -> 255)
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typedef struct padn {
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unsigned char type;
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unsigned char length;
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char mbz[256];
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} padn;
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// 2 octets
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typedef struct neighbour_req {
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unsigned char type;
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unsigned char length;
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} neighbour_req;
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// 20 octets
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typedef struct neighbour {
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unsigned char type;
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unsigned char length;
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struct in6_addr ip;
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int16_t port;
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} neighbour;
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// 18 octets
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typedef struct network_hash {
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unsigned char type;
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unsigned char length;
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unsigned char network_hash[16];
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} network_hash;
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// 2 octets
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typedef struct network_state_req {
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unsigned char type;
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unsigned char length;
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} network_state_req;
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// 28 octets
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typedef struct node_hash {
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unsigned char type;
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unsigned char length;
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uint64_t node_id;
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uint16_t seqno;
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unsigned char node_hash[16];
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} node_hash;
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// 10 octets
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typedef struct node_state_req {
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unsigned char type;
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unsigned char length;
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uint64_t node_id;
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} node_state_req;
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// 28 octets min, 220 octets max (data 0 -> 192)
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typedef struct node_state {
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unsigned char type;
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unsigned char length;
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uint64_t node_id;
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uint16_t seqno;
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unsigned char node_hash[16];
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char data[192];
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} node_state;
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// 2 octets min, 258 ocets max (unsigned char 0 -> 255)
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typedef struct warning {
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unsigned char type;
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unsigned char length;
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char message[256];
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} warning;
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typedef union tlv {
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pad1 *pad1;
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padn *padn;
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neighbour_req *neighbour_req;
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neighbour *neighbour;
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network_hash *network_hash;
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network_state_req *network_state_req;
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node_hash *node_hash;
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node_state_req *node_state_req;
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node_state *node_state;
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warning *warning;
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} tlv;
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#include "node.h"
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#include "hash.h"
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// build specific tlv
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int build_pad1(tlv *tlv);
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int build_padn(tlv *tlv, size_t len);
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int build_neighbour_req(union tlv *tlv);
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int build_neighbour(tlv *tlv, struct in6_addr ip, int16_t port);
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int build_network_hash(tlv *tlv, list *data_list);
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int build_network_state_req(tlv *tlv);
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int build_node_hash(tlv *tlv, uint64_t node_id, uint16_t seqno, char *data, unsigned char length);
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int build_node_state_req(tlv *tlv, uint64_t node_id);
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int build_node_state(tlv *tlv, uint64_t node_id, uint16_t seqno, char *data, size_t data_len);
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int build_warning(tlv *tlv, char *message, size_t message_len);
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#endif
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