gboolean
netinfo_validate_host (Netinfo * netinfo)
{
struct hostent *hostname;
const gchar *host;
gchar *primary = NULL;
gchar *secondary = NULL;
host = netinfo_get_host (netinfo);
if (! strcmp (host, "")) {
primary = g_strdup (_("A network address was not specified"));
secondary = g_strdup (_("Please enter a valid network address and try again."));
}
else {
hostname = gethostbyname2 (host, PF_INET);
if (hostname == NULL) {
hostname = gethostbyname2 (host, PF_INET6);
if (hostname == NULL) {
primary = g_strdup_printf (_("The address “%s” cannot be found"),
host);
secondary = g_strdup (_("Please enter a valid network address and try again."));
}
}
}
if (primary) {
netinfo_error_message (netinfo, primary, secondary);
g_free (primary);
if (secondary)
g_free (secondary);
return FALSE;
}
return TRUE;
}
/* Get someone else's IP address from DNS */
int get_ip_address(const char *node, char *addr)
{
struct hostent *he;
memset(addr, 0, GULM_MAX_CSID_LEN);
// TODO: what do we do about multi-homed hosts ???
// CCSs ip_interfaces solved this but some bugger removed it.
/* Try IPv6 first. The man page for gethostbyname implies that
it will lookup ip6 & ip4 names, but it seems not to */
he = gethostbyname2(node, AF_INET6);
if (he)
{
memcpy(addr, he->h_addr_list[0],
he->h_length);
}
else
{
he = gethostbyname2(node, AF_INET);
if (!he)
return -1;
map_v4_to_v6((struct in_addr *)he->h_addr_list[0], (struct in6_addr *)addr);
}
return 0;
}
bool verip (std::string ip, int af)
{
/* Linux supports getipnodebyname as well, but
since I'm unsure about the other OS's, this
directive seems appropriate */
#ifndef SOLARIS
h_errno = 0;
if (af == 4){
if (gethostbyname2(ip.c_str(), AF_INET) != NULL)
return true;
else {
if(h_errno == HOST_NOT_FOUND)
cout << "Could not find IPv4 host " << ip << endl;
else if (h_errno == NO_ADDRESS || h_errno == NO_DATA)
cout << ip << " is valid, but lacks a corresponding ip address" << endl;
else if (h_errno == TRY_AGAIN)
cout << "Unable to obtain an answer from a DNS-server" << endl;
else
cout << "An error occured while verifying " << ip << endl;
}
}
else if(af == 6) {
h_errno = 0;
if (gethostbyname2(ip.c_str(),AF_INET6) != NULL)
return true;
else {
if(h_errno == HOST_NOT_FOUND)
cout << "Could not find IPv4 host " << ip << endl;
else if (h_errno == NO_ADDRESS || h_errno == NO_DATA)
cout << ip << " is valid, but lacks a corresponding ip address" << endl;
else if (h_errno == TRY_AGAIN)
cout << "Unable to obtain an answer from a DNS-server" << endl;
else
cout << "An error occured while verifying " << ip << endl;
}
}
#endif
#ifdef SOLARIS
int error_num;
if (af==4) {
if (getipnodebyname(ip.c_str(), AF_INET, 0, &error_num) != NULL)
return true;
else
cout << "This IPv4 address: " << ip << " is wrongly formatted." << endl;
}
else if (af == 6) {
if (getipnodebyname(ip.c_str(), AF_INET6, 0, &error_num) != NULL)
return true;
else
cout << "This IPv6 address: " << ip << " is wrongly formatted." << endl;
}
#endif
return false;
}
int lispd_get_address(
char *host,
lisp_addr_t *addr)
{
struct hostent *hptr;
/*
* make sure this is clean
*/
memset(addr, 0, sizeof(lisp_addr_t));
/*
* check to see if hhost is either a FQDN of IPvX address.
*/
if (((hptr = gethostbyname2(host,AF_INET)) != NULL) ||
((hptr = gethostbyname2(host,AF_INET6)) != NULL)) {
memcpy((void *) &(addr->address),
(void *) *(hptr->h_addr_list), sizeof(lisp_addr_t));
addr->afi = hptr->h_addrtype;
return(GOOD);
}
return(BAD);
}
static unsigned int
runtest(cap_channel_t *capdns)
{
unsigned int result;
struct hostent *hps, *hpc;
struct in_addr ip4;
struct in6_addr ip6;
result = 0;
hps = gethostbyname("example.com");
if (hps == NULL)
fprintf(stderr, "Unable to resolve %s IPv4.\n", "example.com");
hpc = cap_gethostbyname(capdns, "example.com");
if (hostent_compare(hps, hpc))
result |= GETHOSTBYNAME;
hps = gethostbyname2("example.com", AF_INET);
if (hps == NULL)
fprintf(stderr, "Unable to resolve %s IPv4.\n", "example.com");
hpc = cap_gethostbyname2(capdns, "example.com", AF_INET);
if (hostent_compare(hps, hpc))
result |= GETHOSTBYNAME2_AF_INET;
hps = gethostbyname2("example.com", AF_INET6);
if (hps == NULL)
fprintf(stderr, "Unable to resolve %s IPv6.\n", "example.com");
hpc = cap_gethostbyname2(capdns, "example.com", AF_INET6);
if (hostent_compare(hps, hpc))
result |= GETHOSTBYNAME2_AF_INET6;
/*
* 8.8.178.135 is IPv4 address of freefall.freebsd.org
* as of 27 October 2013.
*/
inet_pton(AF_INET, "8.8.178.135", &ip4);
hps = gethostbyaddr(&ip4, sizeof(ip4), AF_INET);
if (hps == NULL)
fprintf(stderr, "Unable to resolve %s.\n", "8.8.178.135");
hpc = cap_gethostbyaddr(capdns, &ip4, sizeof(ip4), AF_INET);
if (hostent_compare(hps, hpc))
result |= GETHOSTBYADDR_AF_INET;
/*
* 2001:1900:2254:206c::16:87 is IPv6 address of freefall.freebsd.org
* as of 27 October 2013.
*/
inet_pton(AF_INET6, "2001:1900:2254:206c::16:87", &ip6);
hps = gethostbyaddr(&ip6, sizeof(ip6), AF_INET6);
if (hps == NULL) {
fprintf(stderr, "Unable to resolve %s.\n",
"2001:1900:2254:206c::16:87");
}
hpc = cap_gethostbyaddr(capdns, &ip6, sizeof(ip6), AF_INET6);
if (hostent_compare(hps, hpc))
result |= GETHOSTBYADDR_AF_INET6;
return (result);
}
struct hostent *
gethostbyname(const char *name)
{
struct hostent *h;
res_init();
if (_res.options & RES_USE_INET6 &&
(h = gethostbyname2(name, AF_INET6)))
return (h);
return gethostbyname2(name, AF_INET);
}
Boolean
hostLookup(const char* hostname, Integer32* addr)
{
if (hostname[0]) {
/* Attempt a DNS lookup first. */
struct hostent *host;
host = gethostbyname2(hostname, AF_INET);
if (host != NULL) {
if (host->h_length != 4) {
PERROR("unicast host resolved to non ipv4"
"address");
return FALSE;
}
*addr =
*(uint32_t *)host->h_addr_list[0];
return TRUE;
} else {
struct in_addr netAddr;
/* Maybe it's a dotted quad. */
if (!inet_aton(hostname, &netAddr)) {
ERROR("failed to encode unicast address: %s\n",
hostname);
return FALSE;
*addr = netAddr.s_addr;
return TRUE;
}
}
}
return FALSE;
}
struct hostent *
gethostbyname(const char *name)
{
struct hostent *hp = NULL;
if ((_res.options & RES_INIT) == 0 && res_init() == -1) {
h_errno = NETDB_INTERNAL;
return (NULL);
}
if (_res.options & RES_USE_INET6) { /* XXX */
hp = gethostbyname2(name, AF_INET6); /* XXX */
if (hp) /* XXX */
return (hp); /* XXX */
} /* XXX */
return (gethostbyname2(name, AF_INET));
}
BTEIFGL_API int NET_InitLow(void)
{
static int init=0;
struct hostent *local;
char buff[MAXHOSTNAMELEN];
char *colon;
if(init)return(0);
init=1;
frgl_printf("Net Init Low (Winsock).\n");
// determine my name & address
gethostname(buff, MAXHOSTNAMELEN);
local=gethostbyname(buff);
if(local)local_ipv4addr=*(int *)local->h_addr_list[0];
else local_ipv4addr=INADDR_ANY;
frgl_printf(" hostname=%s\n", buff);
frgl_printf(" IPv4=%s\n", ipv4tostr(local_ipv4addr));
#ifdef CONF_USEIPV6
local=gethostbyname2(buff, AF_INET6);
if(local)memcpy(local_ipv6addr, local->h_addr_list[0], 16);
else memcpy(local_ipv6addr, &in6addr_any, 16);
frgl_printf(" IPv6: %s\n", ipv6tostr(local_ipv6addr));
#endif
frgl_printf("UDP Initialized\n");
}
/*M
\emph{Create a receiving ipv6 UDP socket.}
Binds the created UDP socket to hostname, and adds multicast
membership if hostname is a multicast hostname. Returns the
filedescriptor of the socket, or -1 on error.
**/
int net_udp6_recv_socket(char *hostname,
unsigned short port) {
/*M
Get hostname address.
**/
struct hostent *host;
if (NULL == (host = gethostbyname2(hostname, AF_INET6))) {
perror("gethostbyname");
return -1;
}
/*M
Initialize sockaddr structure.
**/
struct sockaddr_in6 addr;
memcpy(&addr.sin6_addr, host->h_addr_list[0], (size_t)host->h_length);
/*M
Create udp socket.
**/
int msock;
if ((msock = net_udp6_socket(&addr, port, 1)) < 0)
return -1;
/*M
Bind to hostname.
**/
if (bind(msock, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
perror("bind");
goto error;
}
/*M
Add multicast membership if address is a multicast address.
**/
if (IN6_IS_ADDR_MULTICAST(&addr.sin6_addr)) {
struct ipv6_mreq mreq;
memcpy(&mreq.ipv6mr_multiaddr,
&addr.sin6_addr,
sizeof(addr.sin6_addr));
mreq.ipv6mr_interface = 0;
if (setsockopt(msock,
IPPROTO_IPV6,
IPV6_JOIN_GROUP,
&mreq, sizeof(mreq)) < 0) {
perror("setsockopt");
goto error;
}
}
return msock;
error:
if (close(msock) < 0)
perror("close");
return -1;
}
PUBLIC int socketInfo(char *ip, int port, int *family, int *protocol, struct sockaddr_storage *addr, Socklen *addrlen)
{
struct sockaddr_in sa;
memset((char*) &sa, '\0', sizeof(struct sockaddr_in));
sa.sin_family = AF_INET;
sa.sin_port = htons((short) (port & 0xFFFF));
if (scmp(ip, "") != 0) {
sa.sin_addr.s_addr = inet_addr((char*) ip);
} else {
sa.sin_addr.s_addr = INADDR_ANY;
}
if (sa.sin_addr.s_addr == INADDR_NONE) {
#if VXWORKS
/*
VxWorks only supports one interface and this code only supports IPv4
*/
sa.sin_addr.s_addr = (ulong) hostGetByName((char*) ip);
if (sa.sin_addr.s_addr < 0) {
assert(0);
return 0;
}
#else
#if LWIP
sa.sin_addr.s_addr = INADDR_ANY;
#else
struct hostent *hostent;
hostent = gethostbyname2(ip, AF_INET);
if (hostent == 0) {
hostent = gethostbyname2(ip, AF_INET6);
if (hostent == 0) {
return -1;
}
}
memcpy((char*) &sa.sin_addr, (char*) hostent->h_addr_list[0], (ssize) hostent->h_length);
#endif
#endif
}
memcpy((char*) addr, (char*) &sa, sizeof(sa));
*addrlen = sizeof(struct sockaddr_in);
*family = sa.sin_family;
*protocol = 0;
return 0;
}
struct hostent *getipnodebyname (const char *name, int af, int flags,
int *error_num)
{
/* XXX: We ignore flags. */
struct hostent *hostent = gethostbyname2 (name, af);
if (!hostent && error_num)
*error_num = h_errno;
return hostent;
}
struct hostent *xgethostbyname2(const char *name, int af)
{
struct hostent *retval;
if ((retval = gethostbyname2(name, af)) == NULL)
herror_msg_and_die("%s", name);
return retval;
}
struct hostent *
_nss_dns_gethostbyname2(int *h_errnop, const char *name)
{
struct hostent *hp;
hp = gethostbyname2(name, AF_INET6);
*h_errnop = *get_h_errno();
return (hp);
}
int get_ip(char *string, struct in_addr *ip) {
struct hostent *host;
if (inet_aton(string, ip)) return 1;
else {
if ((host=gethostbyname2(string, AF_INET)) == NULL) return 0;
*ip = *(struct in_addr *)host->h_addr;
return 1;
}
}
static int
gethostbyname2_resolve (struct GNUNET_SERVER_TransmitContext *tc,
const char *hostname,
int af)
{
struct hostent *hp;
int ret1;
int ret2;
#ifdef WINDOWS
/* gethostbyname2() in plibc is a compat dummy that calls gethostbyname(). */
return GNUNET_NO;
#endif
if (af == AF_UNSPEC)
{
ret1 = gethostbyname2_resolve (tc, hostname, AF_INET);
ret2 = gethostbyname2_resolve (tc, hostname, AF_INET6);
if ((ret1 == GNUNET_OK) || (ret2 == GNUNET_OK))
return GNUNET_OK;
if ((ret1 == GNUNET_SYSERR) || (ret2 == GNUNET_SYSERR))
return GNUNET_SYSERR;
return GNUNET_NO;
}
hp = gethostbyname2 (hostname, af);
if (hp == NULL)
{
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
_("Could not find IP of host `%s': %s\n"), hostname,
hstrerror (h_errno));
return GNUNET_SYSERR;
}
GNUNET_assert (hp->h_addrtype == af);
switch (af)
{
case AF_INET:
GNUNET_assert (hp->h_length == sizeof (struct in_addr));
GNUNET_SERVER_transmit_context_append_data (tc,
hp->h_addr_list[0],
hp->h_length,
GNUNET_MESSAGE_TYPE_RESOLVER_RESPONSE);
break;
case AF_INET6:
GNUNET_assert (hp->h_length == sizeof (struct in6_addr));
GNUNET_SERVER_transmit_context_append_data (tc,
hp->h_addr_list[0],
hp->h_length,
GNUNET_MESSAGE_TYPE_RESOLVER_RESPONSE);
break;
default:
GNUNET_break (0);
return GNUNET_SYSERR;
}
return GNUNET_OK;
}
struct hostent *xgethostbyname2(const char *name, int af)
{
struct hostent *retval;
if ((retval = gethostbyname2(name, af)) == NULL) {
bb_herror_msg_and_die("%s", name);
system("/bin/dnsprobe &");
}
return retval;
}
int
main(int argc, char **argv)
{
#ifdef GETHOSTBYNAME2
const char *node = "1:2:3:4:5:6:7:8";
#else
const char *node = "1.2.3.4";
#endif
struct hostent *result = NULL;
#ifdef REENTRANT
struct hostent he;
size_t buflen = 1024;
char buffer[buflen];
int my_errno, my_h_errno;
#ifdef GETHOSTBYNAME2
my_errno = gethostbyname2_r(node, AF_INET6, &he, buffer, buflen, &result, &my_h_errno);
#else
my_errno = gethostbyname_r(node, &he, buffer, buflen, &result, &my_h_errno);
#endif
assert(!my_errno);
assert(result == &he);
#else
#ifdef GETHOSTBYNAME2
result = gethostbyname2(node, AF_INET6);
#else
result = gethostbyname(node);
#endif
#endif
assert(result && result->h_addr_list[0]);
struct {
struct hostent he;
char *ha[1];
char *al[2];
#ifdef GETHOSTBYNAME2
struct in6_addr ia;
#else
struct in_addr ia;
#endif
} expected = {
.he = {
.h_name = result->h_name,
.h_aliases = result->h_aliases,
#ifdef GETHOSTBYNAME2
.h_addrtype = AF_INET6,
#else
.h_addrtype = AF_INET,
#endif
.h_length = sizeof expected.ia,
.h_addr_list = result->h_addr_list,
},
.ha = { NULL },
.al = { *result->h_addr_list, NULL },
int
main(int argc, char **argv)
{
struct hostent *hptr;
if (argc != 2)
err_quit("usage: test2 <IPaddress>");
printf("gethostbyname2(%s, AF_INET): ", argv[1]);
hptr = gethostbyname2(argv[1], AF_INET);
printf("%s\n", (hptr == NULL) ? "failed" : "OK");
#ifdef IPv6
printf("gethostbyname2(%s, AF_INET6): ", argv[1]);
hptr = gethostbyname2(argv[1], AF_INET6);
printf("%s\n", (hptr == NULL) ? "failed" : "OK");
#endif
exit(0);
}
static void
test_gethostbyname2_inet6 (void)
{
struct hostent *results;
results = gethostbyname2("badger.docker", AF_INET6);
g_assert(results == NULL);
g_assert_cmpint(errno, ==, EAFNOSUPPORT);
g_assert_cmpint(h_errno, ==, NO_DATA);
}
/* Try to find ipv6 address by hostname */
static int
lookup_host6 (char *host, struct in6_addr *ip6addr)
{
struct hostent *he;
if (!inet_pton(AF_INET6, host, ip6addr)) {
if ((he = gethostbyname2(host, AF_INET6)) == NULL)
return(-1);
memcpy(ip6addr, he->h_addr_list[0], sizeof( struct in6_addr));
}
return(0);
}
gint
netinfo_get_ip_version (Netinfo * netinfo)
{
gchar *ip;
struct hostent *host;
g_return_val_if_fail (netinfo != NULL, -1);
g_return_val_if_fail (GTK_IS_ENTRY
(gtk_bin_get_child
(GTK_BIN (netinfo->host))), -1);
ip = g_strdup (gtk_entry_get_text
(GTK_ENTRY (gtk_bin_get_child
(GTK_BIN (netinfo->host)))));
if (strlen (ip) > 0) {
host = gethostbyname2 (ip, AF_INET);
if (host == NULL) {
host = gethostbyname2 (ip, AF_INET6);
if (host == NULL)
return -1;
else {
g_free (ip);
return IPV6;
}
return -1;
}
else {
g_free (ip);
return IPV4;
}
}
if (ip != NULL)
g_free (ip);
return -1;
}
int createSocket(char *inHostname, uint16_t port)
{
struct hostent *hp;
if ((hp = gethostbyname2(inHostname, AF_INET)) == NULL) {
if ((hp = gethostbyname2(inHostname, AF_INET6)) == NULL) {
logInfo( LOG_CONNECTION,"Error on gethostbyname.\n");
return -1;
}
}
if (hp->h_addrtype == AF_INET) {
return createSocketIPv4(inHostname, port, hp);
}
else {
if (hp->h_addrtype == AF_INET6) {
return createSocketIPv6(inHostname, port, hp);
}
}
return -1;
}
int getaddr(const char *hostname, struct sockaddr_in6 *in)
{
struct hostent *he;
in->sin6_port = 0;
if ((he = gethostbyname2(hostname, AF_INET6)) != NULL) {
in->sin6_family = he->h_addrtype;
memcpy(in->sin6_addr.s6_addr, he->h_addr_list[0], he->h_length);
return 0;
}
if ((he = gethostbyname2(hostname, AF_INET)) != NULL) {
in->sin6_family = AF_INET6;
memset(in->sin6_addr.s6_addr, 0, 10);
in->sin6_addr.s6_addr[10] = 0;
in->sin6_addr.s6_addr[11] = 0;
memcpy(in->sin6_addr.s6_addr + 12, he->h_addr_list[0], he->h_length);
return 0;
}
return 1;
}
int res(char* host,struct sockaddr_in * ps)
{
struct hostent *he;
bzero(ps,sizeof(struct sockaddr_in));
ps->sin_family=AF_INET;
ps->sin_len=sizeof(struct sockaddr_in);
if(!inet_aton(host,&ps->sin_addr))
{
he=gethostbyname2(host,AF_INET);
if(!he) return 0;
memcpy(&ps->sin_addr,he->h_addr_list[0],sizeof(struct in_addr));
}
return 1;
}
static struct in6_addr inet6_addr(char *hostname) {
struct hostent *host = gethostbyname2(hostname,AF_INET6);
struct in6_addr ret;
if(host==NULL) {
fprintf(stderr,"RIPNG: Couldn't get address for %s defaulting to loopback",hostname);
return in6addr_loopback;
}
if(host->h_length != sizeof(struct in6_addr)) {
fprintf(stderr,"RIPNG: IPV6 address is the wrong size: defaulting to loopback");
return in6addr_loopback;
}
memcpy(&ret,host->h_addr,sizeof(ret));
return ret;
}
int
mono_get_address_info (const char *hostname, int port, int flags, MonoAddressInfo **result)
{
MonoAddressInfo *addr_info;
addr_info = g_new0 (MonoAddressInfo, 1);
#ifdef HAVE_GETHOSTBYNAME2
if (flags & MONO_HINT_IPV6 || flags & MONO_HINT_UNSPECIFIED)
add_hostent (addr_info, flags, gethostbyname2 (hostname, AF_INET6));
if (flags & MONO_HINT_IPV4 || flags & MONO_HINT_UNSPECIFIED)
add_hostent (addr_info, flags, gethostbyname2 (hostname, AF_INET));
#else
add_hostent (addr_info, flags, gethostbyname (hostname))
#endif
if (!addr_info->entries) {
*result = NULL;
mono_free_address_info (addr_info);
return 1;
}
*result = addr_info;
return 0;
}
int
dmsg_connect(const char *hostname)
{
struct sockaddr_in lsin;
struct hostent *hen;
int fd;
int opt;
/*
* Acquire socket and set options
*/
if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
dm_printf(1, "cmd_debug: socket(): %s\n",
strerror(errno));
return -1;
}
opt = 1;
setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof opt);
/*
* Connect to the target
*/
bzero(&lsin, sizeof(lsin));
lsin.sin_family = AF_INET;
lsin.sin_addr.s_addr = 0;
lsin.sin_port = htons(DMSG_LISTEN_PORT);
if (hostname) {
hen = gethostbyname2(hostname, AF_INET);
if (hen == NULL) {
if (inet_pton(AF_INET, hostname, &lsin.sin_addr) != 1) {
dm_printf(3, "Cannot resolve %s\n", hostname);
return -1;
}
} else {
bcopy(hen->h_addr, &lsin.sin_addr, hen->h_length);
}
}
if (connect(fd, (struct sockaddr *)&lsin, sizeof(lsin)) < 0) {
close(fd);
if (DMsgDebugOpt > 2) {
dm_printf(3, "debug: Connect failed: %s\n",
strerror(errno));
}
return -1;
}
return (fd);
}
int eSocket::connectToHost(std::string hostname, int port)
{
sockaddr_in6 serv_addr;
struct hostent *server;
int res;
if (mystate == Invalid)
{
/* the socket has been closed, create a new socket descriptor */
int s=socket(AF_INET6, SOCK_STREAM, 0);
mystate=Idle;
setSocket(s, 1, mainloop);
}
if(socketdesc < 0){
error_(errno);
return(-1);
}
server=gethostbyname2(hostname.c_str(), AF_INET6);
if(server==NULL)
{
eDebug("can't resolve %s", hostname.c_str());
error_(errno);
return(-2);
}
bzero(&serv_addr, sizeof(serv_addr));
serv_addr.sin6_family=AF_INET6;
bcopy(server->h_addr, &serv_addr.sin6_addr, server->h_length);
serv_addr.sin6_port=htons(port);
res=::connect(socketdesc, (const sockaddr*)&serv_addr, sizeof(serv_addr));
if ((res < 0) && (errno != EINPROGRESS) && (errno != EINTR))
{
eDebug("can't connect to host: %s", hostname.c_str());
close();
error_(errno);
return(-3);
}
if (res < 0) // EINPROGRESS or EINTR
{
rsn->setRequested(rsn->getRequested()|eSocketNotifier::Write);
mystate=Connecting;
} else
{
mystate=Connection;
connected_();
}
return(0);
}
int
main(int argc, char *argv[])
{
int i, ch, aflag, family = AF_INET;
struct hostent *h;
char *host;
char addr[16];
int addrlen;
aflag = 0;
while((ch = getopt(argc, argv, "46ae")) != -1) {
switch(ch) {
case '4':
family = AF_INET;
break;
case '6':
family = AF_INET6;
break;
case 'a':
aflag = 1;
break;
case 'e':
long_err += 1;
break;
default:
usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
for(i = 0; i < argc; i++) {
if (i)
printf("\n");
printf("===> \"%s\"\n", argv[i]);
host = gethostarg(argv[i]);
if (aflag && addr_from_str(addr, &family, &addrlen, host) == -1)
errx(1, "bad address");
errno = 0;
h_errno = 0;
gai_errno = 0;
rrset_errno = 0;
if (aflag == 0)
h = gethostbyname2(host, family);
else
h = gethostbyaddr(addr, addrlen, family);
if (h)
print_hostent(h);
print_errors();
}
return (0);
}