dazibao/tlv.h

#include <sys/socket.h>
#include <netinet/in.h>
#include "parser.h"

// 8 octets min (struct pointer 4 octets), 1024 octets max 
typedef struct packet {
	unsigned char magic; // 95 (si autre, ignorer)
	unsigned char version; // 1 (si autre, ignorer)
	short length; // 1020 max
	char *body;
} packet;

typedef union tlv {
	pad1 *pad1;
	padn *padn;
	neighbour_req *neighbour_req;
	neighbour *neighbour;
	network_hash *network_hash;
	network_state_req *network_state_req;
	node_hash *node_hash;
	node_state_req *node_state_req;
	node_state *node_state;
	warning *warning;
} tlv;


// 1 octet
typedef struct pad1 {
	unsigned unsigned char type;
} pad1;

// 2 octets min, 257 octets max (unsigned char 0 -> 255)
typedef struct padn {
	unsigned char type;
	unsigned char length;
	char *mbz;
} padn;

// 2 octets
typedef struct neighbour_req {
	unsigned char type;
	unsigned char length;
} neighbour_req;

// 132 octets
typedef struct neighbour {
	unsigned char type;
	unsigned char length;
	struct in6_addr ip;
	short port;
} neighbour;

// 18 octets
typedef struct network_hash {
	unsigned char type;
	unsigned char length;
	char *network_hash;
} network_hash;

// 2 octets
typedef struct network_state_req {
	unsigned char type;
	unsigned char length;
} network_state_req;

// 28 octets
typedef struct node_hash {
	unsigned char type;
	unsigned char length;
	long node_id;
	short seqno;
	char *node_hash;
} node_hash;

// 10 octets
typedef struct node_state_req {
	unsigned char type;
	unsigned char length;
	long node_id;
} node_state_req;

// 28 octets min, 220 octets max (data 0 -> 192)
typedef struct node_state {
	unsigned char type;
	unsigned char length;
	long node_id;
	short seqno;
	char *node_hash;
	char *data;
} node_state;

// 2 octets min, 257 ocets max (unsigned char 0 -> 255)
typedef struct warning {
	unsigned char type;
	unsigned char length;
	char *message;
} warning;

// creer un tlv
void build_tlv(tlv *t) {
	struct cmd_token token = parse_cmd();

	switch(token.type) {
		case NEIGHBOUR_REQ:
			// a remplir
			break;
		case NETWORK_STATE_REQ:
			// a remplir
			break;
		case NODE_STATE_REQ:
			// a remplir
			break;
		case SEND:
			// a remplir
			break;
		case ERROR:
			printf("Wrong format, use 'req {neighbour | network state | node state}' or 'send {message}'");
			break;
	}
}