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nl-route-delete.c

/*
 * src/nl-route-delete.c     Delete Routes
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation version 2.1
 *    of the License.
 *
 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
 */

#include <netlink/cli/utils.h>
#include <netlink/cli/route.h>
#include <netlink/cli/link.h>

static int interactive = 0, default_yes = 0, quiet = 0;
static int deleted = 0;
static struct nl_sock *sock;

static void print_version(void)
{
      fprintf(stderr, "%s\n", LIBNL_STRING);
      exit(0);
}

static void print_usage(void)
{
      printf(
      "Usage: nl-route-delete [OPTION]... [ROUTE]\n"
      "\n"
      "Options\n"
      " -i, --interactive     Run interactively\n"
      "     --yes             Set default answer to yes\n"
      " -q, --quiet           Do not print informal notifications\n"
      " -h, --help            Show this help\n"
      " -v, --version         Show versioning information\n"
      "\n"
      "Route Options\n"
      " -d, --dst=ADDR        destination prefix, e.g. 10.10.0.0/16\n"
      " -n, --nexthop=NH      nexthop configuration:\n"
      "                         dev=DEV         route via device\n"
      "                         weight=WEIGHT   weight of nexthop\n"
      "                         flags=FLAGS\n"
      "                         via=GATEWAY     route via other node\n"
      "                         realms=REALMS\n"
      "                         e.g. dev=eth0,via=192.168.1.12\n"
      " -t, --table=TABLE     Routing table\n"
      "     --family=FAMILY   Address family\n"
      "     --src=ADDR        Source prefix\n"
      "     --iif=DEV         Incomming interface\n"
      "     --pref-src=ADDR   Preferred source address\n"
      "     --metrics=OPTS    Metrics configurations\n"
      "     --priority=NUM    Priotity\n"
      "     --scope=SCOPE     Scope\n"
      "     --protocol=PROTO  Protocol\n"
      "     --type=TYPE       { unicast | local | broadcast | multicast }\n"
      );
      exit(0);
}

static void delete_cb(struct nl_object *obj, void *arg)
{
      struct rtnl_route *route = (struct rtnl_route *) obj;
      struct nl_dump_params params = {
            .dp_type = NL_DUMP_LINE,
            .dp_fd = stdout,
      };
      int err;

      if (interactive && !nl_cli_confirm(obj, &params, default_yes))
            return;

      if ((err = rtnl_route_delete(sock, route, 0)) < 0)
            nl_cli_fatal(err, "Unable to delete route: %s", nl_geterror(err));

      if (!quiet) {
            printf("Deleted ");
            nl_object_dump(obj, &params);
      }

      deleted++;
}

int main(int argc, char *argv[])
{
      struct nl_cache *link_cache, *route_cache;
      struct rtnl_route *route;
      int nf = 0;

      sock = nl_cli_alloc_socket();
      nl_cli_connect(sock, NETLINK_ROUTE);
      link_cache = nl_cli_link_alloc_cache(sock);
      route_cache = nl_cli_route_alloc_cache(sock, 0);
      route = nl_cli_route_alloc();

      for (;;) {
            int c, optidx = 0;
            enum {
                  ARG_FAMILY = 257,
                  ARG_SRC = 258,
                  ARG_IIF,
                  ARG_PREF_SRC,
                  ARG_METRICS,
                  ARG_PRIORITY,
                  ARG_SCOPE,
                  ARG_PROTOCOL,
                  ARG_TYPE,
                  ARG_YES,
            };
            static struct option long_opts[] = {
                  { "interactive", 0, 0, 'i' },
                  { "yes", 0, 0, ARG_YES },
                  { "quiet", 0, 0, 'q' },
                  { "help", 0, 0, 'h' },
                  { "version", 0, 0, 'v' },
                  { "dst", 1, 0, 'd' },
                  { "nexthop", 1, 0, 'n' },
                  { "table", 1, 0, 't' },
                  { "family", 1, 0, ARG_FAMILY },
                  { "src", 1, 0, ARG_SRC },
                  { "iif", 1, 0, ARG_IIF },
                  { "pref-src", 1, 0, ARG_PREF_SRC },
                  { "metrics", 1, 0, ARG_METRICS },
                  { "priority", 1, 0, ARG_PRIORITY },
                  { "scope", 1, 0, ARG_SCOPE },
                  { "protocol", 1, 0, ARG_PROTOCOL },
                  { "type", 1, 0, ARG_TYPE },
                  { 0, 0, 0, 0 }
            };

            c = getopt_long(argc, argv, "iqhvd:n:t:", long_opts, &optidx);
            if (c == -1)
                  break;

            switch (c) {
            case 'i': interactive = 1; break;
            case ARG_YES: default_yes = 1; break;
            case 'q': quiet = 1; break;
            case 'h': print_usage(); break;
            case 'v': print_version(); break;
            case 'd': nf++; nl_cli_route_parse_dst(route, optarg); break;
            case 'n': nf++; nl_cli_route_parse_nexthop(route, optarg, link_cache); break;
            case 't': nf++; nl_cli_route_parse_table(route, optarg); break;
            case ARG_FAMILY: nf++; nl_cli_route_parse_family(route, optarg); break;
            case ARG_SRC: nf++; nl_cli_route_parse_src(route, optarg); break;
            case ARG_IIF: nf++; nl_cli_route_parse_iif(route, optarg, link_cache); break;
            case ARG_PREF_SRC: nf++; nl_cli_route_parse_pref_src(route, optarg); break;
            case ARG_METRICS: nf++; nl_cli_route_parse_metric(route, optarg); break;
            case ARG_PRIORITY: nf++; nl_cli_route_parse_prio(route, optarg); break;
            case ARG_SCOPE: nf++; nl_cli_route_parse_scope(route, optarg); break;
            case ARG_PROTOCOL: nf++; nl_cli_route_parse_protocol(route, optarg); break;
            case ARG_TYPE: nf++; nl_cli_route_parse_type(route, optarg); break;
            }
      }

      if (nf == 0 && !interactive && !default_yes) {
            fprintf(stderr, "You attempted to delete all routes in "
                  "non-interactive mode, aborting.\n");
            exit(0);
      }

      nl_cache_foreach_filter(route_cache, OBJ_CAST(route), delete_cb, NULL);

      if (!quiet)
            printf("Deleted %d routes\n", deleted);

      return 0;
}

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