struct async *
gethostbyaddr_async(const void *addr, socklen_t len, int af, struct asr *asr)
{
struct asr_ctx *ac;
struct async *as;
ac = asr_use_resolver(asr);
as = gethostbyaddr_async_ctx(addr, len, af, ac);
asr_ctx_unref(ac);
return (as);
}
static int
getnameinfo_async_run(struct asr_query *as, struct asr_result *ar)
{
void *addr;
socklen_t addrlen;
int r;
next:
switch (as->as_state) {
case ASR_STATE_INIT:
/* Make sure the parameters are all valid. */
if (as->as.ni.sa.sa.sa_family != AF_INET &&
as->as.ni.sa.sa.sa_family != AF_INET6) {
ar->ar_gai_errno = EAI_FAMILY;
async_set_state(as, ASR_STATE_HALT);
break;
}
if ((as->as.ni.sa.sa.sa_family == AF_INET &&
(SA_LEN(&as->as.ni.sa.sa) != sizeof (as->as.ni.sa.sain))) ||
(as->as.ni.sa.sa.sa_family == AF_INET6 &&
(SA_LEN(&as->as.ni.sa.sa) != sizeof (as->as.ni.sa.sain6)))) {
ar->ar_gai_errno = EAI_FAIL;
async_set_state(as, ASR_STATE_HALT);
break;
}
/* Set the service name first, if needed. */
if (_servname(as) == -1) {
ar->ar_gai_errno = EAI_OVERFLOW;
async_set_state(as, ASR_STATE_HALT);
break;
}
if (as->as.ni.hostname == NULL || as->as.ni.hostnamelen == 0) {
ar->ar_gai_errno = 0;
async_set_state(as, ASR_STATE_HALT);
break;
}
if (as->as.ni.flags & NI_NUMERICHOST) {
if (_numerichost(as) == -1) {
if (errno == ENOMEM)
ar->ar_gai_errno = EAI_MEMORY;
else if (errno == ENOSPC)
ar->ar_gai_errno = EAI_OVERFLOW;
else {
ar->ar_errno = errno;
ar->ar_gai_errno = EAI_SYSTEM;
}
} else
ar->ar_gai_errno = 0;
async_set_state(as, ASR_STATE_HALT);
break;
}
if (as->as.ni.sa.sa.sa_family == AF_INET) {
addrlen = sizeof(as->as.ni.sa.sain.sin_addr);
addr = &as->as.ni.sa.sain.sin_addr;
} else {
addrlen = sizeof(as->as.ni.sa.sain6.sin6_addr);
addr = &as->as.ni.sa.sain6.sin6_addr;
}
/*
* Create a subquery to lookup the address.
*/
as->as.ni.subq = gethostbyaddr_async_ctx(addr, addrlen,
as->as.ni.sa.sa.sa_family,
as->as_ctx);
if (as->as.ni.subq == NULL) {
ar->ar_gai_errno = EAI_MEMORY;
async_set_state(as, ASR_STATE_HALT);
break;
}
async_set_state(as, ASR_STATE_SUBQUERY);
break;
case ASR_STATE_SUBQUERY:
if ((r = asr_run(as->as.ni.subq, ar)) == ASYNC_COND)
return (ASYNC_COND);
/*
* Request done.
*/
as->as.ni.subq = NULL;
if (ar->ar_hostent == NULL) {
if (as->as.ni.flags & NI_NAMEREQD) {
ar->ar_gai_errno = EAI_NONAME;
} else if (_numerichost(as) == -1) {
if (errno == ENOMEM)
ar->ar_gai_errno = EAI_MEMORY;
else if (errno == ENOSPC)
ar->ar_gai_errno = EAI_OVERFLOW;
else {
ar->ar_errno = errno;
ar->ar_gai_errno = EAI_SYSTEM;
}
} else
ar->ar_gai_errno = 0;
} else {
if (strlcpy(as->as.ni.hostname,
ar->ar_hostent->h_name,
as->as.ni.hostnamelen) >= as->as.ni.hostnamelen)
ar->ar_gai_errno = EAI_OVERFLOW;
else
ar->ar_gai_errno = 0;
free(ar->ar_hostent);
}
async_set_state(as, ASR_STATE_HALT);
break;
case ASR_STATE_HALT:
return (ASYNC_DONE);
default:
ar->ar_errno = EOPNOTSUPP;
ar->ar_gai_errno = EAI_SYSTEM;
async_set_state(as, ASR_STATE_HALT);
break;
}
goto next;
}
