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/*
* Copyright (C) 2015 Freie Universitรคt Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @{
*
* @file
* @author Martine Lenders <mlenders@inf.fu-berlin.de>
*/
#include <errno.h>
#include <stdbool.h>
#include "byteorder.h"
#include "net/af.h"
#include "net/ipv4/addr.h"
#include "net/ipv6/addr.h"
#include "net/conn.h"
#include "lwip/api.h"
#include "lwip/opt.h"
int lwip_conn_create(struct netconn **netconn, const void *addr, size_t addr_len, int family,
int type, int proto, uint16_t port)
{
struct netconn *tmp;
int res = 0;
switch (family) {
#if LWIP_IPV4
case AF_INET:
if (addr_len != sizeof(ipv4_addr_t)) {
return -EINVAL;
}
break;
#endif
#if LWIP_IPV6
case AF_INET6:
if (addr_len != sizeof(ipv6_addr_t)) {
return -EINVAL;
}
type |= NETCONN_TYPE_IPV6;
break;
#endif
default:
return -EAFNOSUPPORT;
}
if ((tmp = netconn_new_with_proto_and_callback(type, proto, NULL)) == NULL) {
return -ENOMEM;
}
switch (netconn_bind(tmp, (ip_addr_t *)addr, port)) {
case ERR_USE:
netconn_delete(tmp);
res = -EADDRINUSE;
break;
case ERR_VAL:
netconn_delete(tmp);
res = -EINVAL;
break;
default:
break;
}
*netconn = tmp;
return res;
}
int lwip_conn_getlocaladdr(struct netconn *netconn, void *addr, uint16_t *port)
{
uint16_t tmp;
if (netconn_getaddr(netconn, addr, &tmp, 1) != ERR_OK) {
return -EOPNOTSUPP;
}
if (port != NULL) {
*port = tmp;
}
#if LWIP_IPV6
if (netconn->type & NETCONN_TYPE_IPV6) {
return sizeof(ipv6_addr_t);
}
#endif
#if LWIP_IPV4
return sizeof(ipv4_addr_t);
#else
return -EOPNOTSUPP;
#endif
}
int lwip_conn_recvfrom(struct netconn *netconn, void *data, size_t max_len, void *addr,
size_t *addr_len, uint16_t *port)
{
struct netbuf *buf;
size_t len = 0;
err_t res = 0;
uint8_t *data_ptr = data;
if (netconn == NULL) {
return -ENOTSOCK;
}
if ((res = netconn_recv(netconn, &buf))) {
switch (res) {
#if LWIP_SO_RCVTIMEO
case ERR_TIMEOUT:
return -ETIMEDOUT;
#endif
case ERR_MEM:
return -ENOMEM;
default:
return -EIO;
}
}
len = buf->p->tot_len;
if (len > max_len) {
netbuf_delete(buf);
return -ENOBUFS;
}
#if LWIP_IPV6
if (netconn->type & NETCONN_TYPE_IPV6) {
*addr_len = sizeof(ipv6_addr_t);
}
else {
#endif
#if LWIP_IPV4
*addr_len = sizeof(ipv4_addr_t);
#else
netbuf_delete(buf);
return -EOPNOTSUPP;
#endif
#if LWIP_IPV6
}
#endif
/* copy address */
memcpy(addr, &buf->addr, *addr_len);
/* copy port */
if (port != NULL) {
*port = buf->port;
}
/* copy data */
for (struct pbuf *q = buf->p; q != NULL; q = q->next) {
memcpy(data_ptr, q->payload, q->len);
data_ptr += q->len;
}
netbuf_delete(buf);
return (int)len;
}
int lwip_conn_sendto(struct netconn *netconn, const void *data, size_t len,
const void *addr, size_t addr_len, uint16_t port)
{
struct netbuf *buf;
int res;
#if LWIP_IPV6
if (netconn->type & NETCONN_TYPE_IPV6) {
if (addr_len != sizeof(ipv6_addr_t)) {
return -EINVAL;
}
}
else {
#endif
#if LWIP_IPV4
if (addr_len != sizeof(ipv4_addr_t)) {
return -EINVAL;
}
#endif
#if LWIP_IPV6
}
#endif
buf = netbuf_new();
if ((buf == NULL) || (netbuf_alloc(buf, len) == NULL)) {
netbuf_delete(buf);
return -ENOMEM;
}
if (netbuf_take(buf, data, len) != ERR_OK) {
netbuf_delete(buf);
return -ENOBUFS;
}
switch ((res = netconn_sendto(netconn, buf, addr, port))) {
case ERR_OK:
res = len;
break;
case ERR_RTE:
res = -EHOSTUNREACH;
break;
case ERR_VAL:
res = -EINVAL;
break;
case ERR_IF:
res = -EAFNOSUPPORT;
break;
default:
res = -EIO;
break;
}
netbuf_delete(buf);
return res;
}
/** @} */
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