/* Released under GPLv2 with exception for the OpenSSL library. See license.txt */

/* $Revision$ */

#include <sys/types.h>

#include <sys/time.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <libintl.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(const char *host, struct addrinfo **ai, char use_ipv6, int portnr)

{

int rc = -1;

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);

rc = getaddrinfo(host, servname, &myaddr, ai);

if (rc != 0)

set_error(gettext("Resolving %s %sfailed: %s"), host, use_ipv6 ? gettext("(IPv6) ") : "", gai_strerror(rc));

return rc;

}

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 p;

p = p -> ai_next;

}

return NULL;

}

void get_addr(struct addrinfo *ai_use, struct sockaddr_in6 *addr)

{

memcpy(addr, ai_use->ai_addr, ai_use->ai_addrlen);

}

#define incopy(a) *((struct in_addr *)a)

int resolve_host_ipv4(const char *host, struct sockaddr_in *addr)

{

struct hostent *hostdnsentries = gethostbyname(host);

if (hostdnsentries == NULL)

{

set_error(gettext("Problem resolving %s (IPv4): %s"), host, hstrerror(h_errno));

return -1;

}

/* create address structure */

addr -> sin_family = hostdnsentries -> h_addrtype;

addr -> sin_addr = incopy(hostdnsentries -> h_addr_list[0]);

return 0;

}