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/*
* Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of Hyra nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* 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.
*/
#include <sys/errno.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <net/if.h>
#include <net/ethernet.h>
#include <unistd.h>
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include "link.h"
int
onet_open(const char *iface, struct onet_link *res)
{
struct ifreq ifr;
int error;
if (res == NULL) {
return -EINVAL;
}
/* Open a raw socket */
res->sockfd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
if (res->sockfd < 0) {
return res->sockfd;
}
/* Set the interface we want to use */
strlcpy(ifr.ifr_name, iface, IFNAMSIZ);
error = ioctl(res->sockfd, SIOGIFINDEX, &ifr);
if (error < 0) {
printf("ioctl[SIOGIFHWADDR]: could not read hwaddr \"%s\"\n", iface);
return error;
}
res->iface_idx = ifr.ifr_ifindex;
/* Get the hardware address */
error = ioctl(res->sockfd, SIOCGIFHWADDR, &ifr);
if (error < 0) {
printf("ioctl[SIOGIFHWADDR]: could not read hwaddr \"%s\"\n", iface);
return error;
}
res->hwaddr = mac_swap((void *)ifr.ifr_hwaddr.sa_data);
return 0;
}
int
onet_close(struct onet_link *olp)
{
if (olp == NULL) {
return -EINVAL;
}
close(olp->sockfd);
}
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