source: MondoRescue/branches/2.2.5/mindi-busybox/networking/libiproute/rtm_map.c@ 1765

/* vi: set sw=4 ts=4: */
/*
 * rtm_map.c
 *
 *      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.
 *
 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
 *
 */

#include "libbb.h"
#include "rt_names.h"
#include "utils.h"

const char *rtnl_rtntype_n2a(int id, char *buf, int len)
{
    switch (id) {
    case RTN_UNSPEC:
        return "none";
    case RTN_UNICAST:
        return "unicast";
    case RTN_LOCAL:
        return "local";
    case RTN_BROADCAST:
        return "broadcast";
    case RTN_ANYCAST:
        return "anycast";
    case RTN_MULTICAST:
        return "multicast";
    case RTN_BLACKHOLE:
        return "blackhole";
    case RTN_UNREACHABLE:
        return "unreachable";
    case RTN_PROHIBIT:
        return "prohibit";
    case RTN_THROW:
        return "throw";
    case RTN_NAT:
        return "nat";
    case RTN_XRESOLVE:
        return "xresolve";
    default:
        snprintf(buf, len, "%d", id);
        return buf;
    }
}


int rtnl_rtntype_a2n(int *id, char *arg)
{
    static const char keywords[] ALIGN1 =
        "local\0""nat\0""broadcast\0""brd\0""anycast\0"
        "multicast\0""prohibit\0""unreachable\0""blackhole\0"
        "xresolve\0""unicast\0""throw\0";
    enum {
        ARG_local = 1, ARG_nat, ARG_broadcast, ARG_brd, ARG_anycast,
        ARG_multicast, ARG_prohibit, ARG_unreachable, ARG_blackhole,
        ARG_xresolve, ARG_unicast, ARG_throw
    };
    const smalluint key = index_in_substrings(keywords, arg) + 1;
    char *end;
    unsigned long res;

    if (key == ARG_local)
        res = RTN_LOCAL;
    else if (key == ARG_nat)
        res = RTN_NAT;
    else if (key == ARG_broadcast || key == ARG_brd)
        res = RTN_BROADCAST;
    else if (key == ARG_anycast)
        res = RTN_ANYCAST;
    else if (key == ARG_multicast)
        res = RTN_MULTICAST;
    else if (key == ARG_prohibit)
        res = RTN_PROHIBIT;
    else if (key == ARG_unreachable)
        res = RTN_UNREACHABLE;
    else if (key == ARG_blackhole)
        res = RTN_BLACKHOLE;
    else if (key == ARG_xresolve)
        res = RTN_XRESOLVE;
    else if (key == ARG_unicast)
        res = RTN_UNICAST;
    else if (key == ARG_throw)
        res = RTN_THROW;
    else {
        res = strtoul(arg, &end, 0);
        if (!end || end == arg || *end || res > 255)
            return -1;
    }
    *id = res;
    return 0;
}

int get_rt_realms(uint32_t *realms, char *arg)
{
    uint32_t realm = 0;
    char *p = strchr(arg, '/');

    *realms = 0;
    if (p) {
        *p = 0;
        if (rtnl_rtrealm_a2n(realms, arg)) {
            *p = '/';
            return -1;
        }
        *realms <<= 16;
        *p = '/';
        arg = p+1;
    }
    if (*arg && rtnl_rtrealm_a2n(&realm, arg))
        return -1;
    *realms |= realm;
    return 0;
}