* apps/wireless/wapi/src/network.c
*
* Copyright (C) 2011, 2017 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Adapted for NuttX from WAPI:
*
* Copyright (c) 2010, Volkan YAZICI <volkan.yazici@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
* Included Files
****************************************************************************/
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <strings.h>
#include <stdio.h>
#include <stdlib.h>
#include <net/route.h>
#include <netinet/in.h>
#include "util.h"
#include "wireless/wapi.h"
* Private Functions
****************************************************************************/
static int wapi_get_addr(int sock, FAR const char *ifname, int cmd,
FAR struct in_addr *addr)
{
struct ifreq ifr;
int ret;
WAPI_VALIDATE_PTR(addr);
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
if ((ret = ioctl(sock, cmd, (unsigned long)((uintptr_t)&ifr))) >= 0)
{
struct sockaddr_in *sin = (struct sockaddr_in *)&ifr.ifr_addr;
memcpy(addr, &sin->sin_addr, sizeof(struct in_addr));
}
else
{
int errcode = errno;
WAPI_IOCTL_STRERROR(cmd, errcode);
ret = -errcode;
}
return ret;
}
static int wapi_set_addr(int sock, FAR const char *ifname, int cmd,
FAR const struct in_addr *addr)
{
struct sockaddr_in sin;
struct ifreq ifr;
int ret;
WAPI_VALIDATE_PTR(addr);
sin.sin_family = AF_INET;
sin.sin_port = 0;
memcpy(&sin.sin_addr, addr, sizeof(struct in_addr));
memcpy(&ifr.ifr_addr, &sin, sizeof(struct sockaddr_in));
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
if ((ret = ioctl(sock, cmd, (unsigned long)((uintptr_t)&ifr))) < 0)
{
int errcode = errno;
WAPI_IOCTL_STRERROR(cmd, errcode);
ret = -errcode;
}
return ret;
}
#ifdef CONFIG_NET_ROUTE
static int wapi_act_route_gw(int sock, int act,
enum wapi_route_target_e targettype,
FAR const struct in_addr *target,
FAR const struct in_addr *netmask,
FAR const struct in_addr *gw)
{
int ret;
struct rtentry rt;
FAR struct sockaddr_in *sin;
bzero(&rt, sizeof(struct rtentry));
sin = (FAR struct sockaddr_in *)&rt.rt_dst;
sin->sin_family = AF_INET;
memcpy(&sin->sin_addr, target, sizeof(struct in_addr));
sin = (FAR struct sockaddr_in *)&rt.rt_genmask;
sin->sin_family = AF_INET;
memcpy(&sin->sin_addr, netmask, sizeof(struct in_addr));
sin = (FAR struct sockaddr_in *)&rt.rt_gateway;
sin->sin_family = AF_INET;
memcpy(&sin->sin_addr, gw, sizeof(struct in_addr));
rt.rt_flags = RTF_UP | RTF_GATEWAY;
if (targettype == WAPI_ROUTE_TARGET_HOST)
{
rt.rt_flags |= RTF_HOST;
}
if ((ret = ioctl(sock, act, (unsigned long)((uintptr_t)&rt))) < 0)
{
int errcode = errno;
WAPI_IOCTL_STRERROR(act, errcode);
ret = -errcode;
}
return ret;
}
#endif
* Public Functions
****************************************************************************/
* Name: wapi_get_ifup
*
* Description:
* Gets the interface up status.
*
* Input Parameters:
* is_up Set to 0, if up; 1, otherwise.
*
****************************************************************************/
int wapi_get_ifup(int sock, FAR const char *ifname, FAR int *is_up)
{
struct ifreq ifr;
int ret;
WAPI_VALIDATE_PTR(is_up);
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
ret = ioctl(sock, SIOCGIFFLAGS, (unsigned long)((uintptr_t)&ifr));
if (ret >= 0)
{
*is_up = (ifr.ifr_flags & IFF_UP) == IFF_UP;
}
else
{
int errcode = errno;
WAPI_IOCTL_STRERROR(SIOCGIFFLAGS, errcode);
ret = -errcode;
}
return ret;
}
* Name: wapi_set_ifup
*
* Description:
* Activates the interface.
*
****************************************************************************/
int wapi_set_ifup(int sock, FAR const char *ifname)
{
struct ifreq ifr;
int ret;
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
ret = ioctl(sock, SIOCGIFFLAGS, (unsigned long)((uintptr_t)&ifr));
if (ret >= 0)
{
ifr.ifr_flags |= (IFF_UP | IFF_RUNNING);
ret = ioctl(sock, SIOCSIFFLAGS, (unsigned long)((uintptr_t)&ifr));
if (ret < 0)
{
int errcode = errno;
WAPI_IOCTL_STRERROR(SIOCSIFFLAGS, errcode);
ret = -errcode;
}
}
else
{
int errcode = errno;
WAPI_IOCTL_STRERROR(SIOCGIFFLAGS, errcode);
ret = -errcode;
}
return ret;
}
* Name: wapi_set_ifdown
*
* Description:
* Shuts down the interface.
*
****************************************************************************/
int wapi_set_ifdown(int sock, FAR const char *ifname)
{
struct ifreq ifr;
int ret;
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
ret = ioctl(sock, SIOCGIFFLAGS, (unsigned long)((uintptr_t)&ifr));
if (ret >= 0)
{
ifr.ifr_flags &= ~IFF_UP;
ret = ioctl(sock, SIOCSIFFLAGS, (unsigned long)((uintptr_t)&ifr));
if (ret < 0)
{
int errcode = errno;
WAPI_IOCTL_STRERROR(SIOCSIFFLAGS, errcode);
ret = -errcode;
}
}
else
{
int errcode = errno;
WAPI_IOCTL_STRERROR(SIOCGIFFLAGS, errcode);
ret = -errcode;
}
return ret;
}
* Name: wapi_get_ip
*
* Description:
* Gets IP address of the given network interface.
*
****************************************************************************/
int wapi_get_ip(int sock, FAR const char *ifname, FAR struct in_addr *addr)
{
return wapi_get_addr(sock, ifname, SIOCGIFADDR, addr);
}
* Name: wapi_set_ip
*
* Description:
* Sets IP address of the given network interface.
*
****************************************************************************/
int wapi_set_ip(int sock, FAR const char *ifname,
FAR const struct in_addr *addr)
{
return wapi_set_addr(sock, ifname, SIOCSIFADDR, addr);
}
* Name: wapi_set_netmask
*
* Description:
* Sets netmask of the given network interface.
*
****************************************************************************/
int wapi_get_netmask(int sock, FAR const char *ifname,
FAR struct in_addr *addr)
{
return wapi_get_addr(sock, ifname, SIOCGIFNETMASK, addr);
}
* Name: wapi_set_netmask
*
* Description:
* Sets netmask of the given network interface.
*
****************************************************************************/
int wapi_set_netmask(int sock, FAR const char *ifname,
FAR const struct in_addr *addr)
{
return wapi_set_addr(sock, ifname, SIOCSIFNETMASK, addr);
}
* Name: wapi_add_route_gw
*
* Description:
* Adds gateway for the given target network.
*
****************************************************************************/
#ifdef CONFIG_NET_ROUTE
int wapi_add_route_gw(int sock, enum wapi_route_target_e targettype,
FAR const struct in_addr *target,
FAR const struct in_addr *netmask,
FAR const struct in_addr *gw)
{
return wapi_act_route_gw(sock, SIOCADDRT, targettype, target, netmask, gw);
}
#endif
* Name: wapi_del_route_gw
*
* Description:
* Deletes gateway for the given target network.
*
****************************************************************************/
#ifdef CONFIG_NET_ROUTE
int wapi_del_route_gw(int sock, enum wapi_route_target_e targettype,
FAR const struct in_addr *target,
FAR const struct in_addr *netmask,
FAR const struct in_addr *gw)
{
return wapi_act_route_gw(sock, SIOCDELRT, targettype, target, netmask, gw);
}
#endif