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
40
41
42
43
44
45
46
47
48
49
|
/* Released under GPLv2 with exception for the OpenSSL library. See license.txt */
#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "gen.h"
#include "res.h"
#include "error.h"
int resolve_host(char *host, struct addrinfo **ai, char use_ipv6, int portnr)
{
char servname[10];
struct addrinfo myaddr;
memset(&myaddr, 0, sizeof(myaddr));
/* myaddr.ai_flags = AI_PASSIVE; */
myaddr.ai_socktype = SOCK_STREAM;
myaddr.ai_protocol = IPPROTO_TCP;
myaddr.ai_family = use_ipv6 ? AF_INET6 : AF_INET;
snprintf(servname, sizeof(servname), "%d", portnr);
return getaddrinfo(host, servname, &myaddr, ai);
}
struct addrinfo * select_resolved_host(struct addrinfo *ai, char use_ipv6)
{
struct addrinfo *p = ai;
while(p)
{
if (p -> ai_family == AF_INET6 && use_ipv6)
return p;
if (p -> ai_family == AF_INET)
return ai;
}
return NULL;
}
void get_addr(struct addrinfo *ai_use, struct sockaddr_in6 *addr)
{
memcpy(addr, ai_use->ai_addr, ai_use->ai_addrlen);
}
|
