umka/umka_ping.c

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/*
umka_shell: User-Mode KolibriOS developer tools, the ping
Copyright (C) 2020 Ivan Baravy <dunkaist@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <fcntl.h>
#include <inttypes.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <netinet/in.h>
#include "shell.h"
#include "umka.h"
#include "trace.h"
#include "vnet.h"
// tap
#include <stdint.h>
#include <net/if.h>
#include <linux/if_tun.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include <sys/select.h>
#include <sys/time.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
static net_device_t vnet = {
.device_type = NET_TYPE_ETH,
.mtu = 1514,
.name = "UMK0770",
.unload = vnet_unload,
.reset = vnet_reset,
.transmit = vnet_transmit,
.bytes_tx = 0,
.bytes_rx = 0,
.packets_tx = 0,
.packets_rx = 0,
.link_state = ETH_LINK_FD + ETH_LINK_10M,
.hwacc = 0,
.mac = {0x80, 0x2b, 0xf9, 0x3b, 0x6c, 0xca},
};
uint8_t packet[4096] = {8, 0, 0, 0, 0, 0, 0, 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5'};
int tap_alloc(char *dev)
{
int flags = IFF_TAP | IFF_NO_PI;
struct ifreq ifr;
int fd, err;
char *clonedev = "/dev/net/tun";
if( (fd = open(clonedev , O_RDWR)) < 0 )
{
perror("Opening /dev/net/tun");
return fd;
}
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = flags;
if(*dev)
{
strncpy(ifr.ifr_name, dev, IFNAMSIZ);
}
if( (err = ioctl(fd, TUNSETIFF, (void *)&ifr)) < 0 )
{
perror("ioctl(TUNSETIFF)");
close(fd);
return err;
}
strcpy(dev, ifr.ifr_name);
return fd;
}
int main(int argc, char **argv) {
umka_tool = UMKA_SHELL;
const char *usage = \
"usage: umka_shell <ip | hostname> [-c]\n"
" -c collect coverage";
int opt;
while ((opt = getopt(argc, argv, "c")) != -1) {
switch (opt) {
case 'c':
coverage = 1;
break;
default:
puts(usage);
return 1;
}
}
if (coverage)
trace_begin();
COVERAGE_ON();
kos_init();
COVERAGE_OFF();
kos_stack_init();
char tapdev[IFNAMSIZ] = "tap0";
int tapfd = tap_alloc(tapdev);
vnet_init(tapfd);
kos_net_add_device(&vnet);
char devname[64];
umka_sys_net_dev_reset(1);
for (size_t i = 0; i < umka_sys_net_get_dev_count(); i++) {
// umka_sys_net_dev_reset(i);
umka_sys_net_get_dev_name(i, devname);
uint32_t devtype = umka_sys_net_get_dev_type(i);
printf("device %i: %s %u\n", i, devname, devtype);
}
f76ret_t r76;
r76 = umka_sys_net_ipv4_set_subnet(1, inet_addr("0.0.0.0"));
if (r76.eax == (uint32_t)-1) {
fprintf(stderr, "error\n");
exit(1);
}
r76 = umka_sys_net_ipv4_set_gw(1, inet_addr("192.168.1.1"));
if (r76.eax == (uint32_t)-1) {
fprintf(stderr, "error\n");
exit(1);
}
r76 = umka_sys_net_ipv4_set_dns(1, inet_addr("217.10.36.5"));
if (r76.eax == (uint32_t)-1) {
fprintf(stderr, "error\n");
exit(1);
}
r76 = umka_sys_net_ipv4_set_addr(1, inet_addr("192.168.1.27"));
if (r76.eax == (uint32_t)-1) {
fprintf(stderr, "error\n");
exit(1);
}
f75ret_t r75;
r75 = umka_sys_net_open_socket(AF_INET4, SOCK_RAW, IPPROTO_ICMP);
if (r75.errorcode == (uint32_t)-1) {
fprintf(stderr, "error\n");
exit(1);
}
uint32_t sockfd = r75.value;
// uint32_t addr = inet_addr("127.0.0.1");
// uint32_t addr = inet_addr("192.243.108.5");
uint32_t addr = inet_addr("10.50.0.1");
uint16_t port = 0;
struct sockaddr_in sa;
memset(&sa, 0, sizeof(sa));
sa.sin_family = AF_INET4;
sa.sin_port = htons(port);
sa.sin_addr.s_addr = addr;
r75 = umka_sys_net_connect(sockfd, &sa, sizeof(struct sockaddr_in));
if (r75.errorcode == (uint32_t)-1) {
fprintf(stderr, "error %u\n", r75.errorcode);
exit(1);
}
r75 = umka_sys_net_send(sockfd, packet, 64, 0);
if (r75.errorcode == (uint32_t)-1) {
fprintf(stderr, "error %u\n", r75.errorcode);
exit(1);
}
if (coverage)
trace_end();
return 0;
}