1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "byte.h"
#include "ip.h"
#include "socket_if.h"
/**
@file socket_recv.c
@author djb, fefe
@source ucspi-tcp6
@brief setup receiving socket
*/
int socket_recv(int s,char *buf,unsigned int len,char ip[16],uint16 *port,uint32 *scope_id)
{
struct sockaddr_in6 sa;
unsigned int dummy = sizeof(sa);
int r;
byte_zero(&sa,dummy);
r = recvfrom(s,buf,len,0,(struct sockaddr *)&sa,&dummy);
if (r == -1) return -1;
if (sa.sin6_family == AF_INET) {
struct sockaddr_in *sa4 = (struct sockaddr_in *)&sa;
byte_copy(ip,12,V4mappedprefix);
byte_copy(ip+12,4,(char *)&sa4->sin_addr);
uint16_unpack_big((char *)&sa4->sin_port,port);
if (scope_id) *scope_id = 0;
} else {
byte_copy(ip,16,(char *)&sa.sin6_addr);
uint16_unpack_big((char *)&sa.sin6_port,port);
if (scope_id) *scope_id = sa.sin6_scope_id;
}
return r;
}
|
