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#include <netinet/in.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <errno.h>
#include "byte.h"
#include "ip.h"
#include "socket_if.h"
/**
@file socket_connect.c
@authors djb, fefe, feh, kp
@ref qmail, ucscpi-tcp6
@brief connection to remote IP host
*/
int socket_connect6(int s, const char ip[16], uint16 port, uint32 scope_id)
{
struct sockaddr_in6 sa;
byte_zero(&sa, sizeof(sa));
sa.sin6_family = AF_INET6;
uint16_pack_big((char *)&sa.sin6_port, port);
sa.sin6_flowinfo = 0;
sa.sin6_scope_id = scope_id;
byte_copy((char *)&sa.sin6_addr, 16, ip);
return connect(s, (struct sockaddr *)&sa, sizeof(sa));
}
/* this explizit declaration is needed to prevent compiler warnings */
int read(int _str, void *_buf, int _b);
int socket_connect4(int s, 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 connect(s, (struct sockaddr *)&sa, sizeof(sa));
}
int socket_connect(int s, const char ip[16], uint16 port, uint32 scope_id)
{
if (ip6_isv4mapped(ip)) return socket_connect4(s, ip + 12, port);
return socket_connect6(s, ip, port, scope_id);
}
int socket_connected(int s)
{
struct sockaddr_in6 sa;
int dummy;
char ch;
dummy = sizeof(sa);
if (getpeername(s, (struct sockaddr *)&sa, (socklen_t *)&dummy) == -1) {
read(s, &ch, 1); /* sets errno */
return 0;
}
return 1;
}
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