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#include <netinet/in.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/types.h>
#include "byte.h"
#include "ip.h"
#include "socket_if.h"
/**
@file socket_send.c
@authors djb, fefe, feh
@ref ucspi-tcp6
@brief setup sending socket
*/
int socket_send4(int s, const char *buf, unsigned int len, const char ip[4], uint16 port)
{
struct sockaddr_in sa;
byte_zero(&sa, sizeof(sa));
sa.sin_family = AF_INET;
uint16_pack_big((char *)&sa.sin_port, port);
byte_copy((char *)&sa.sin_addr, 4, ip);
return sendto(s, buf, len, 0, (struct sockaddr *)&sa, sizeof(sa));
}
int socket_send6(
int s, const char *buf, unsigned int len, const char ip[16], uint16 port, uint32 scope_id)
{
struct sockaddr_in6 sa;
byte_zero(&sa, sizeof(sa));
sa.sin6_family = AF_INET6;
sa.sin6_scope_id = scope_id;
uint16_pack_big((char *)&sa.sin6_port, port);
byte_copy((char *)&sa.sin6_addr, 16, ip);
return sendto(s, buf, len, 0, (struct sockaddr *)&sa, sizeof(sa));
}
int socket_send(
int s, const char *buf, unsigned int len, const char ip[16], uint16 port, uint32 scope_id)
{
if (ip6_isv4mapped(ip))
return socket_send4(s, buf, len, ip + 12, port);
else
return socket_send6(s, buf, len, ip, port, scope_id);
}
int socket_broadcast4(int s, const char *buf, unsigned int len, uint16 port)
{
struct sockaddr_in sa;
byte_zero(&sa, sizeof(sa));
sa.sin_family = AF_INET;
uint16_pack_big((char *)&sa.sin_port, port);
byte_copy((char *)&sa.sin_addr, 4, V4broadcast);
return sendto(s, buf, len, 0, (struct sockaddr *)&sa, sizeof(sa));
}
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