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//
// Copyright 2017 Garrett D'Amore <garrett@damore.org>
// Copyright 2017 Capitar IT Group BV <info@capitar.com>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "core/nng_impl.h"
#include <stdio.h>
#include <string.h>
int
nni_chkopt_usec(const void *v, size_t sz)
{
nni_duration val;
if (sz != sizeof(val)) {
return (NNG_EINVAL);
}
memcpy(&val, v, sz);
if (val < -1) {
return (NNG_EINVAL);
}
return (0);
}
int
nni_chkopt_int(const void *v, size_t sz, int minv, int maxv)
{
int val;
if (sz != sizeof(val)) {
return (NNG_EINVAL);
}
memcpy(&val, v, sz);
if ((val < minv) || (val > maxv)) {
return (NNG_EINVAL);
}
return (0);
}
int
nni_chkopt_size(const void *v, size_t sz, size_t minv, size_t maxv)
{
size_t val;
if (sz != sizeof(val)) {
return (NNG_EINVAL);
}
memcpy(&val, v, sz);
if ((val < minv) || (val > maxv)) {
return (NNG_EINVAL);
}
return (0);
}
int
nni_setopt_usec(nni_duration *dp, const void *v, size_t sz)
{
nni_duration dur;
if (sz != sizeof(*dp)) {
return (NNG_EINVAL);
}
memcpy(&dur, v, sizeof(dur));
if (dur < -1) {
return (NNG_EINVAL);
}
*dp = dur;
return (0);
}
int
nni_setopt_int(int *ip, const void *v, size_t sz, int minv, int maxv)
{
int i;
if (sz != sizeof(i)) {
return (NNG_EINVAL);
}
memcpy(&i, v, sizeof(i));
if (i > maxv) {
return (NNG_EINVAL);
}
if (i < minv) {
return (NNG_EINVAL);
}
*ip = i;
return (0);
}
int
nni_setopt_size(size_t *sp, const void *v, size_t sz, size_t minv, size_t maxv)
{
size_t val;
if (sz != sizeof(val)) {
return (NNG_EINVAL);
}
memcpy(&val, v, sizeof(val));
if (val > maxv) {
return (NNG_EINVAL);
}
if (val < minv) {
return (NNG_EINVAL);
}
*sp = val;
return (0);
}
int
nni_getopt_usec(nni_duration u, void *val, size_t *sizep)
{
size_t sz = sizeof(u);
if (sz > *sizep) {
sz = *sizep;
}
*sizep = sizeof(u);
memcpy(val, &u, sz);
return (0);
}
int
nni_getopt_sockaddr(const nng_sockaddr *sa, void *val, size_t *sizep)
{
size_t sz = sizeof(*sa);
if (sz > *sizep) {
sz = *sizep;
}
*sizep = sizeof(*sa);
memcpy(val, sa, sz);
return (0);
}
int
nni_getopt_int(int i, void *val, size_t *sizep)
{
size_t sz = sizeof(i);
if (sz > *sizep) {
sz = *sizep;
}
*sizep = sizeof(i);
memcpy(val, &i, sz);
return (0);
}
int
nni_getopt_u64(const uint64_t u, void *val, size_t *sizep)
{
size_t sz = sizeof(u);
if (sz > *sizep) {
sz = *sizep;
}
*sizep = sizeof(u);
memcpy(val, &u, sz);
return (0);
}
int
nni_getopt_str(const char *ptr, void *val, size_t *sizep)
{
size_t len = strlen(ptr) + 1;
size_t sz;
sz = (len > *sizep) ? *sizep : len;
*sizep = len;
memcpy(val, ptr, sz);
return (0);
}
int
nni_getopt_size(size_t u, void *val, size_t *sizep)
{
size_t sz = sizeof(u);
if (sz > *sizep) {
sz = *sizep;
}
*sizep = sizeof(u);
memcpy(val, &u, sz);
return (0);
}
int
nni_setopt_buf(nni_msgq *mq, const void *val, size_t sz)
{
int len;
if (sz < sizeof(len)) {
return (NNG_EINVAL);
}
memcpy(&len, val, sizeof(len));
if (len < 0) {
return (NNG_EINVAL);
}
if (len > 8192) {
// put a reasonable uppper limit on queue depth.
// This is a count in messages, so the total queue
// size could be quite large indeed in this case.
return (NNG_EINVAL);
}
return (nni_msgq_resize(mq, len));
}
int
nni_getopt_buf(nni_msgq *mq, void *val, size_t *sizep)
{
int len = nni_msgq_cap(mq);
size_t sz = *sizep;
if (sz > sizeof(len)) {
sz = sizeof(len);
}
memcpy(val, &len, sz);
*sizep = sizeof(len);
return (0);
}
static void
nni_notifyfd_push(struct nng_event *ev, void *arg)
{
nni_notifyfd *fd = arg;
NNI_ARG_UNUSED(ev);
nni_plat_pipe_raise(fd->sn_wfd);
}
int
nni_getopt_fd(nni_sock *s, nni_notifyfd *fd, int mask, void *val, size_t *szp)
{
int rv;
uint32_t flags;
if ((*szp < sizeof(int))) {
return (NNG_EINVAL);
}
flags = nni_sock_flags(s);
switch (mask) {
case NNG_EV_CAN_SND:
if ((flags & NNI_PROTO_FLAG_SND) == 0) {
return (NNG_ENOTSUP);
}
break;
case NNG_EV_CAN_RCV:
if ((flags & NNI_PROTO_FLAG_RCV) == 0) {
return (NNG_ENOTSUP);
}
break;
default:
return (NNG_ENOTSUP);
}
// If we already inited this, just give back the same file descriptor.
if (fd->sn_init) {
memcpy(val, &fd->sn_rfd, sizeof(int));
*szp = sizeof(int);
return (0);
}
if ((rv = nni_plat_pipe_open(&fd->sn_wfd, &fd->sn_rfd)) != 0) {
return (rv);
}
if (nni_sock_notify(s, mask, nni_notifyfd_push, fd) == NULL) {
nni_plat_pipe_close(fd->sn_wfd, fd->sn_rfd);
return (NNG_ENOMEM);
}
fd->sn_init = 1;
*szp = sizeof(int);
memcpy(val, &fd->sn_rfd, sizeof(int));
return (0);
}
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