struct async *
gethostbyname2_async(const char *name, int af, struct asr *asr)
{
struct asr_ctx *ac;
struct async *as;
/* the original segfaults */
if (name == NULL) {
errno = EINVAL;
return (NULL);
}
ac = asr_use_resolver(asr);
if ((as = async_new(ac, ASR_GETHOSTBYNAME)) == NULL)
goto abort; /* errno set */
as->as_run = gethostnamadr_async_run;
as->as.hostnamadr.family = af;
if (af == AF_INET)
as->as.hostnamadr.addrlen = INADDRSZ;
else if (af == AF_INET6)
as->as.hostnamadr.addrlen = IN6ADDRSZ;
as->as.hostnamadr.name = strdup(name);
if (as->as.hostnamadr.name == NULL)
goto abort; /* errno set */
asr_ctx_unref(ac);
return (as);
abort:
if (as)
async_free(as);
asr_ctx_unref(ac);
return (NULL);
}
struct async *
getaddrinfo_async(const char *hostname, const char *servname,
const struct addrinfo *hints, struct asr *asr)
{
struct asr_ctx *ac;
struct async *as;
ac = asr_use_resolver(asr);
if ((as = async_new(ac, ASR_GETADDRINFO)) == NULL)
goto abort; /* errno set */
as->as_run = getaddrinfo_async_run;
if (hostname && (as->as.ai.hostname = strdup(hostname)) == NULL)
goto abort; /* errno set */
if (servname && (as->as.ai.servname = strdup(servname)) == NULL)
goto abort; /* errno set */
if (hints)
memmove(&as->as.ai.hints, hints, sizeof *hints);
else {
memset(&as->as.ai.hints, 0, sizeof as->as.ai.hints);
as->as.ai.hints.ai_family = PF_UNSPEC;
}
asr_ctx_unref(ac);
return (as);
abort:
if (as)
async_free(as);
asr_ctx_unref(ac);
return (NULL);
}
struct async *
gethostbyaddr_async_ctx(const void *addr, socklen_t len, int af,
struct asr_ctx *ac)
{
struct async *as;
if ((as = async_new(ac, ASR_GETHOSTBYADDR)) == NULL)
goto abort; /* errno set */
as->as_run = gethostnamadr_async_run;
as->as.hostnamadr.family = af;
as->as.hostnamadr.addrlen = len;
if (len > 0)
memmove(as->as.hostnamadr.addr, addr, (len > 16) ? 16 : len);
return (as);
abort:
if (as)
async_free(as);
return (NULL);
}