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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/socket.h>
#include <sys/ioctl.h>
#include <linux/if_packet.h>
#include <netinet/in.h>
#include <net/if.h>
#include <net/ethernet.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "if_ether.h"
#include "dgram.h"
#include "link.h"
#define TEST_STR "Hello from o.1p!! Meow meow!"
static const char *iface = NULL;
static void
help(char **argv)
{
printf(
"usage: %s -i <iface>\n"
"[-h] Show this message\n"
"[-i] Interface to use\n",
argv[0]
);
}
static int
data_send(void)
{
char data[DGRAM_LEN(128)], *p;
struct sockaddr_ll saddr;
struct ether_hdr *eth;
struct onet_dgram *dgram;
struct onet_link link;
int error;
eth = (struct ether_hdr *)data;
p = DGRAM_DATA(data);
dgram = DGRAM_HDR(data);
memset(data, 0, sizeof(data));
memcpy(p, TEST_STR, sizeof(TEST_STR));
/* Open a link */
error = onet_open(iface, &link);
if (error < 0) {
return error;
}
/*
* Set up link layer sockaddr, load up the frame, datagram
* and send it off.
*/
saddr.sll_ifindex = link.iface_idx;
saddr.sll_halen = ETH_ALEN;
ether_load_route(link.hwaddr, 0xFFFFFFFFFFFF, eth);
dgram_load(sizeof(TEST_STR), 50, dgram);
sendto(
link.sockfd, &data, sizeof(data), 0,
(struct sockaddr *)&saddr, sizeof(struct sockaddr_ll)
);
onet_close(&link);
return 0;
}
int
main(int argc, char **argv)
{
int opt;
if (argc < 2) {
printf("error: too few arguments!\n");
help(argv);
return -1;
}
while ((opt = getopt(argc, argv, "i:h")) != -1) {
switch (opt) {
case 'h':
help(argv);
return -1;
case 'i':
iface = optarg;
break;
}
}
/* We need an interface */
if (iface == NULL) {
printf("error: interface not supplied\n");
return -1;
}
return data_send();
}
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