104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 2009, The Android Open Source Project
|
|
* 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.
|
|
* * Neither the name of Google, Inc. 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 <stdio.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <linux/route.h>
|
|
|
|
static inline int set_address(const char *address, struct sockaddr *sa) {
|
|
return inet_aton(address, &((struct sockaddr_in *)sa)->sin_addr);
|
|
}
|
|
|
|
/* current support the following routing entries */
|
|
/* route add default dev wlan0 */
|
|
/* route add default gw 192.168.1.1 dev wlan0 */
|
|
/* route add -net 192.168.1.2 netmask 255.255.255.0 gw 192.168.1.1 */
|
|
|
|
int route_main(int argc, char *argv[])
|
|
{
|
|
struct rtentry rt = {
|
|
.rt_dst = {.sa_family = AF_INET},
|
|
.rt_genmask = {.sa_family = AF_INET},
|
|
.rt_gateway = {.sa_family = AF_INET},
|
|
};
|
|
|
|
errno = EINVAL;
|
|
if (argc > 2 && !strcmp(argv[1], "add")) {
|
|
if (!strcmp(argv[2], "default")) {
|
|
/* route add default dev wlan0 */
|
|
if (argc > 4 && !strcmp(argv[3], "dev")) {
|
|
rt.rt_flags = RTF_UP | RTF_HOST;
|
|
rt.rt_dev = argv[4];
|
|
errno = 0;
|
|
goto apply;
|
|
}
|
|
|
|
/* route add default gw 192.168.1.1 dev wlan0 */
|
|
if (argc > 6 && !strcmp(argv[3], "gw") && !strcmp(argv[5], "dev")) {
|
|
rt.rt_flags = RTF_UP | RTF_GATEWAY;
|
|
rt.rt_dev = argv[6];
|
|
if (set_address(argv[4], &rt.rt_gateway)) {
|
|
errno = 0;
|
|
}
|
|
goto apply;
|
|
}
|
|
}
|
|
|
|
/* route add -net 192.168.1.2 netmask 255.255.255.0 gw 192.168.1.1 */
|
|
if (argc > 7 && !strcmp(argv[2], "-net") &&
|
|
!strcmp(argv[4], "netmask") && !strcmp(argv[6], "gw")) {
|
|
rt.rt_flags = RTF_UP | RTF_GATEWAY;
|
|
if (set_address(argv[3], &rt.rt_dst) &&
|
|
set_address(argv[5], &rt.rt_genmask) &&
|
|
set_address(argv[7], &rt.rt_gateway)) {
|
|
errno = 0;
|
|
}
|
|
goto apply;
|
|
}
|
|
}
|
|
|
|
apply:
|
|
if (!errno) {
|
|
int s = socket(AF_INET, SOCK_DGRAM, 0);
|
|
if (s != -1 && (ioctl(s, SIOCADDRT, &rt) != -1 || errno == EEXIST)) {
|
|
return 0;
|
|
}
|
|
}
|
|
puts(strerror(errno));
|
|
return errno;
|
|
}
|