int
_ht_gethostbyaddr(void* rval, void* cb_data, va_list ap) {
const void* addr;
socklen_t len;
int af;
char* buffer;
size_t buflen;
int* errnop, *h_errnop;
struct hostent* hptr, he;
struct hostent_data* hed;
res_state statp;
int error;
addr = va_arg(ap, const void*);
len = va_arg(ap, socklen_t);
af = va_arg(ap, int);
hptr = va_arg(ap, struct hostent*);
buffer = va_arg(ap, char*);
buflen = va_arg(ap, size_t);
errnop = va_arg(ap, int*);
h_errnop = va_arg(ap, int*);
*((struct hostent**)rval) = NULL;
statp = __res_state();
if ((hed = __hostent_data_init()) == NULL) {
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
*h_errnop = statp->res_h_errno;
return (NS_NOTFOUND);
}
_sethosthtent(0, hed);
while ((error = gethostent_p(&he, hed, 0, statp)) == 0)
if (he.h_addrtype == af && !bcmp(he.h_addr, addr, len)) {
if (he.h_addrtype == AF_INET &&
statp->options & RES_USE_INET6) {
_map_v4v6_address(he.h_addr, he.h_addr);
he.h_length = IN6ADDRSZ;
he.h_addrtype = AF_INET6;
}
break;
}
_endhosthtent(hed);
if (error != 0) {
return (NS_NOTFOUND);
}
if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
*h_errnop = statp->res_h_errno;
return (NS_NOTFOUND);
}
*((struct hostent**)rval) = hptr;
return (NS_SUCCESS);
}
static void
hostent_data_free(void *ptr)
{
struct hostent_data *hed = ptr;
if (hed == NULL)
return;
hed->stayopen = 0;
_endhosthtent(hed);
free(hed);
}
int
_ht_gethostbyname(void* rval, void* cb_data, va_list ap) {
const char* name;
int af;
char* buffer;
size_t buflen;
int* errnop, *h_errnop;
struct hostent* hptr, he;
struct hostent_data* hed;
char** cp;
res_state statp;
int error;
name = va_arg(ap, const char*);
af = va_arg(ap, int);
hptr = va_arg(ap, struct hostent*);
buffer = va_arg(ap, char*);
buflen = va_arg(ap, size_t);
errnop = va_arg(ap, int*);
h_errnop = va_arg(ap, int*);
*((struct hostent**)rval) = NULL;
statp = __res_state();
if ((hed = __hostent_data_init()) == NULL) {
RES_SET_H_ERRNO(statp, NETDB_INTERNAL);
*h_errnop = statp->res_h_errno;
return (NS_NOTFOUND);
}
_sethosthtent(0, hed);
while ((error = gethostent_p(&he, hed, 0, statp)) == 0) {
if (he.h_addrtype != af) {
continue;
}
if (he.h_addrtype == AF_INET &&
statp->options & RES_USE_INET6) {
_map_v4v6_address(he.h_addr, he.h_addr);
he.h_length = IN6ADDRSZ;
he.h_addrtype = AF_INET6;
}
if (strcasecmp(he.h_name, name) == 0) {
break;
}
for (cp = he.h_aliases; *cp != 0; cp++)
if (strcasecmp(*cp, name) == 0) {
goto found;
}
}
found:
_endhosthtent(hed);
if (error != 0) {
*h_errnop = statp->res_h_errno;
return (NS_NOTFOUND);
}
if (__copy_hostent(&he, hptr, buffer, buflen) != 0) {
*h_errnop = statp->res_h_errno;
return (NS_NOTFOUND);
}
*((struct hostent**)rval) = hptr;
return (NS_SUCCESS);
}
