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Teach getent(1) to look up a hostname and find IPv6 addresses.

Browse Source 
PR:	bin/161548
Submitted by:	matthew
This commit is contained in:
Kevin Lo 2012-09-26 09:29:48 +00:00
parent a9111e46bc
commit d1f1954b23
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=240954
1 changed files with 22 additions and 12 deletions
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34
usr.bin/getent/getent.c
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@ -277,7 +277,7 @@ hostsprint(const struct hostent *he)
static int
hosts(int argc, char *argv[])
{
struct hostent *he;
struct hostent *he4, *he6;
char addr[IN6ADDRSZ];
int i, rv;
@ -285,21 +285,31 @@ hosts(int argc, char *argv[])
assert(argv != NULL);
sethostent(1);
he4 = he6 = NULL;
rv = RV_OK;
if (argc == 2) {
while ((he = gethostent()) != NULL)
hostsprint(he);
while ((he4 = gethostent()) != NULL)
hostsprint(he4);
} else {
for (i = 2; i < argc; i++) {
if (inet_pton(AF_INET6, argv[i], (void *)addr) > 0)
he = gethostbyaddr(addr, IN6ADDRSZ, AF_INET6);
else if (inet_pton(AF_INET, argv[i], (void *)addr) > 0)
he = gethostbyaddr(addr, INADDRSZ, AF_INET);
else
he = gethostbyname(argv[i]);
if (he != NULL)
hostsprint(he);
else {
if (inet_pton(AF_INET6, argv[i], (void *)addr) > 0) {
he6 = gethostbyaddr(addr, IN6ADDRSZ, AF_INET6);
if (he6 != NULL)
hostsprint(he6);
} else if (inet_pton(AF_INET, argv[i],
(void *)addr) > 0) {
he4 = gethostbyaddr(addr, INADDRSZ, AF_INET);
if (he4 != NULL)
hostsprint(he4);
} else {
he6 = gethostbyname2(argv[i], AF_INET6);
if (he6 != NULL)
hostsprint(he6);
he4 = gethostbyname(argv[i]);
if (he4 != NULL)
hostsprint(he4);
}
if ( he4 == NULL && he6 == NULL ) {
rv = RV_NOTFOUND;
break;
}