src/f_route.c

   1 /*
   2  * src/f_route.c        Routes Filter
   3  *
   4  *      This library is free software; you can redistribute it and/or
   5  *      modify it under the terms of the GNU Lesser General Public
   6  *      License as published by the Free Software Foundation version 2.1
   7  *      of the License.
   8  *
   9  * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
  10  */
  11
  12 static void get_filter(struct rtnl_route *r, int ac, char **av, int idx,
  13                        struct nl_cache *cache, struct nl_cache *link_cache)
  14 {
  15         while (ac > idx) {
  16                 if (!strcasecmp(av[idx], "src")) {
  17                         if (ac > ++idx) {
  18                                 struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC);
  19                                 if (!a)
  20                                         goto err;
  21                                 rtnl_route_set_pref_src(r, a);
  22                                 nl_addr_put(a);
  23                         }
  24                 } else if (!strcasecmp(av[idx], "dst")) {
  25                         if (ac > ++idx) {
  26                                 struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC);
  27                                 if (!a)
  28                                         goto err;
  29                                 rtnl_route_set_dst(r, a);
  30                                 nl_addr_put(a);
  31                         }
  32                 } else if (!strcasecmp(av[idx], "via")) {
  33                         if (ac > ++idx) {
  34                                 struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC);
  35                                 if (!a)
  36                                         goto err;
  37                                 rtnl_route_set_gateway(r, a);
  38                                 nl_addr_put(a);
  39                         }
  40                 } else if (!strcasecmp(av[idx], "from")) {
  41                         if (ac > ++idx) {
  42                                 struct nl_addr *a = nl_addr_parse(av[idx++], AF_UNSPEC);
  43                                 if (!a)
  44                                         goto err;
  45                                 rtnl_route_set_src(r, a);
  46                                 nl_addr_put(a);
  47                         }
  48                 } else if (!strcasecmp(av[idx], "tos")) {
  49                         if (ac > ++idx)
  50                                 rtnl_route_set_tos(r, strtoul(av[idx++], NULL, 0));
  51                 } else if (!strcasecmp(av[idx], "prio")) {
  52                         if (ac > ++idx)
  53                                 rtnl_route_set_prio(r, strtoul(av[idx++], NULL, 0));
  54                 } else if (!strcasecmp(av[idx], "scope")) {
  55                         if (ac > ++idx)
  56                                 rtnl_route_set_scope(r, rtnl_str2scope(av[idx++]));
  57                 } else if (!strcasecmp(av[idx], "dev")) {
  58                         if (ac > ++idx) {
  59                                 int ifindex = rtnl_link_name2i(link_cache, av[idx++]);
  60                                 if (ifindex == RTNL_LINK_NOT_FOUND)
  61                                         goto err_notfound;
  62                                 rtnl_route_set_oif(r, ifindex);
  63                         }
  64                 } else if (!strcasecmp(av[idx], "table")) {
  65                         if (ac > ++idx)
  66                                 rtnl_route_set_table(r, strtoul(av[idx++], NULL, 0));
  67                 } else {
  68                         fprintf(stderr, "What is '%s'?\n", av[idx]);
  69                         exit(1);
  70                 }
  71         }
  72
  73         return;
  74
  75 err_notfound:
  76         fprintf(stderr, "Unable to find device \"%s\"\n", av[idx-1]);
  77         exit(1);
  78 err:
  79         fprintf(stderr, "%s\n", nl_geterror());
  80         exit(1);
  81 }