route.c

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/*
 * route.c
 *
 * Copyright (c) 2001 Dug Song <dugsong@monkey.org>
 *
 * $Id: route.c,v 1.2 2002/03/29 05:24:36 dugsong Exp $
 */

#include "config.h"

#include <sys/types.h>

#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "dnet.h"
#include "mod.h"

static void
usage(void)
{
        fprintf(stderr, "Usage: dnet route show\n"
                        "       dnet route get <dst>\n"
                        "       dnet route add <dst> <gw>\n"
                        "       dnet route delete <dst>\n");
        exit(1);
}

static int
print_route(const struct route_entry *entry, void *arg)
{
        printf("%-20s %-20s\n",
            addr_ntoa(&entry->route_dst), addr_ntoa(&entry->route_gw));
        return (0);
}

int
route_main(int argc, char *argv[])
{
        struct route_entry entry;
        route_t *r;
        char *cmd;

        if (argc < 2)
                usage();

        cmd = argv[1];
        
        if ((r = route_open()) == NULL)
                err(1, "route_open");

        if (strcmp(cmd, "show") == 0) {
                printf("%-20s %-20s\n", "Destination", "Gateway");
                if (route_loop(r, print_route, NULL) < 0)
                        err(1, "route_loop");
        } else if (strcmp(cmd, "get") == 0) {
                if (addr_aton(argv[2], &entry.route_dst) < 0)
                        err(1, "addr_aton");
                if (route_get(r, &entry) < 0)
                        err(1, "route_get");
                printf("get %s %s: gateway %s\n",
                    (entry.route_dst.addr_bits < IP_ADDR_BITS) ?
                    "net" : "host", addr_ntoa(&entry.route_dst),
                    addr_ntoa(&entry.route_gw));
        } else if (strcmp(cmd, "add") == 0) {
                if (argc < 4 ||
                    addr_aton(argv[2], &entry.route_dst) < 0 ||
                    addr_aton(argv[3], &entry.route_gw) < 0)
                        err(1, "addr_aton");
                if (route_add(r, &entry) < 0)
                        err(1, "route_add");
                printf("add %s %s: gateway %s\n",
                    (entry.route_dst.addr_bits < IP_ADDR_BITS) ?
                    "net" : "host", addr_ntoa(&entry.route_dst),
                    addr_ntoa(&entry.route_gw));
        } else if (strcmp(cmd, "delete") == 0) {
                if (addr_aton(argv[2], &entry.route_dst) < 0)
                        err(1, "addr_aton");
                if (route_delete(r, &entry) < 0)
                        err(1, "route_delete");
                printf("delete %s %s\n",
                    (entry.route_dst.addr_bits < IP_ADDR_BITS) ?
                    "net" : "host", addr_ntoa(&entry.route_dst));
        } else
                usage();
        
        route_close(r);
        
        exit(0);
}

struct mod mod_route = {
        "route",
        MOD_TYPE_KERN,
        route_main
};

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