Merge "Lose route to toybox."

    prlimit \

    renice \

    restorecon \

    route \

    sendevent \

    setprop \

    start \

/*

 * 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;

                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")) {

            if (!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;

            } else if (!strcmp(argv[6], "dev")) {

                rt.rt_flags = RTF_UP;

                rt.rt_dev = argv[7];

                if (set_address(argv[3], &rt.rt_dst) &&

                    set_address(argv[5], &rt.rt_genmask)) {

                    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;

}