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nl-addr-list.c

/*
 * src/nl-addr-list.c     List addresses
 *
 *    This library 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 version 2 of the License.
 *
 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
 */

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

static void print_usage(void)
{
      printf(
"Usage: nl-addr-list [OPTION]... [ADDRESS]\n"
"\n"
"Options\n"
"     --details             Show details on multiple lines.\n"
"     --env                 Print address details in sh env variable syntax.\n"
"     --prefix=STRING       Prefix each printed line.\n"
" -h, --help                Show this help.\n"
" -v, --version             Show versioning information.\n"
"\n"
"Address Selection\n"
" -a, --local=ADDR          Local address.\n"
" -d, --dev=DEV             Associated network device.\n"
"     --family=FAMILY       Family of local address.\n"
"     --label=STRING        Address label (IPv4).\n"
"     --peer=ADDR           Peer address (IPv4).\n"
"     --scope=SCOPE         Address scope (IPv4).\n"
"     --broadcast=ADDR      Broadcast address of network (IPv4).\n"
"     --valid-lifetime=TS   Valid lifetime before route expires (IPv6).\n"
"     --preferred=TIME      Preferred lifetime (IPv6).\n"
"     --valid=TIME          Valid lifetime (IPv6).\n"
      );
      exit(0);
}

static char *prefix;

void print_prefix(struct nl_dump_params *p, int line)
{
      if (prefix)
            nl_dump(p, "%s", prefix);
}

static void env_dump(struct nl_object *obj, void *arg)
{
      struct nl_dump_params *p = arg;
      struct rtnl_addr *addr = (struct rtnl_addr *) obj;
      struct nl_cache *link_cache;
      struct nl_addr *a;
      static int index = 0;
      char buf[128], pfx[32], *s;

      snprintf(pfx, sizeof(pfx), "ADDR%d", index++);

      nl_dump_line(p, "%s_FAMILY=%s\n", pfx,
                 nl_af2str(rtnl_addr_get_family(addr), buf, sizeof(buf)));

      nl_dump_line(p, "%s_LOCAL=%s\n", pfx,
                 nl_addr2str(rtnl_addr_get_local(addr), buf, sizeof(buf)));

      nl_dump_line(p, "%s_IFINDEX=%u\n", pfx, rtnl_addr_get_ifindex(addr));
      link_cache = nl_cache_mngt_require("route/link");
      if (link_cache)
            nl_dump_line(p, "%s_IFNAME=%s\n", pfx,
                       rtnl_link_i2name(link_cache,
                                    rtnl_addr_get_ifindex(addr),
                                    buf, sizeof(buf)));

      if ((a = rtnl_addr_get_peer(addr)))
            nl_dump_line(p, "%s_PEER=%s\n", pfx,
                       nl_addr2str(a, buf, sizeof(buf)));

      if ((a = rtnl_addr_get_broadcast(addr)))
            nl_dump_line(p, "%s_BROADCAST=%s\n", pfx,
                       nl_addr2str(a, buf, sizeof(buf)));

      nl_dump_line(p, "%s_SCOPE=%s\n", pfx,
                 rtnl_scope2str(rtnl_addr_get_scope(addr),
                            buf, sizeof(buf)));

      if ((s = rtnl_addr_get_label(addr)))
            nl_dump_line(p, "%s_LABEL=%s\n", pfx, s);

      rtnl_addr_flags2str(rtnl_addr_get_flags(addr), buf, sizeof(buf));
      if (buf[0])
            nl_dump_line(p, "%s_FLAGS=%s\n", pfx, buf);

      nl_dump_line(p, "%s_CACHEINFO_VALID=%u\n", pfx,
                 rtnl_addr_get_valid_lifetime(addr));

#if 0
      if (addr->ce_mask & ADDR_ATTR_CACHEINFO) {
            struct rtnl_addr_cacheinfo *ci = &addr->a_cacheinfo;

            nl_dump_line(p, "ADDR_CACHEINFO_PREFERRED=%u\n",
                       ci->aci_prefered);

            nl_dump_line(p, "ADDR_CACHEINFO_CREATED=%u\n", ci->aci_cstamp);
            nl_dump_line(p, "ADDR_CACHEINFO_LASTUPDATE=%u\n",
                       ci->aci_tstamp);
      }
#endif
}

int main(int argc, char *argv[])
{
      struct nl_sock *sock;
      struct rtnl_addr *addr;
      struct nl_cache *link_cache, *addr_cache;
      struct nl_dump_params params = {
            .dp_type = NL_DUMP_LINE,
            .dp_nl_cb = print_prefix,
            .dp_fd = stdout,
      };
      int dump_env = 0;

      sock = nl_cli_alloc_socket();
      nl_cli_connect(sock, NETLINK_ROUTE);
      link_cache = nl_cli_link_alloc_cache(sock);
      addr_cache = nl_cli_addr_alloc_cache(sock);
      addr = nl_cli_addr_alloc();

      for (;;) {
            int c, optidx = 0;
            enum {
                  ARG_FAMILY = 257,
                  ARG_LABEL = 258,
                  ARG_PEER,
                  ARG_SCOPE,
                  ARG_BROADCAST,
                  ARG_DETAILS,
                  ARG_ENV,
                  ARG_PREFIX,
                  ARG_PREFERRED,
                  ARG_VALID,
            };
            static struct option long_opts[] = {
                  { "details", 0, 0, ARG_DETAILS },
                  { "env", 0, 0, ARG_ENV },
                  { "prefix", 1, 0, ARG_PREFIX },
                  { "help", 0, 0, 'h' },
                  { "version", 0, 0, 'v' },
                  { "local", 1, 0, 'a' },
                  { "dev", 1, 0, 'd' },
                  { "family", 1, 0, ARG_FAMILY },
                  { "label", 1, 0, ARG_LABEL },
                  { "peer", 1, 0, ARG_PEER },
                  { "scope", 1, 0, ARG_SCOPE },
                  { "broadcast", 1, 0, ARG_BROADCAST },
                  { "preferred", 1, 0, ARG_PREFERRED },
                  { "valid", 1, 0, ARG_VALID },
                  { 0, 0, 0, 0 }
            };

            c = getopt_long(argc, argv, "46hva:d:", long_opts, &optidx);
            if (c == -1)
                  break;

            switch (c) {
            case '?': exit(NLE_INVAL);
            case '4': rtnl_addr_set_family(addr, AF_INET); break;
            case '6': rtnl_addr_set_family(addr, AF_INET6); break;
            case ARG_DETAILS: params.dp_type = NL_DUMP_DETAILS; break;
            case ARG_ENV: dump_env = 1; break;
            case ARG_PREFIX: prefix = strdup(optarg); break;
            case 'h': print_usage(); break;
            case 'v': nl_cli_print_version(); break;
            case 'a': nl_cli_addr_parse_local(addr, optarg); break;
            case 'd': nl_cli_addr_parse_dev(addr, link_cache, optarg); break;
            case ARG_FAMILY: nl_cli_addr_parse_family(addr, optarg); break;
            case ARG_LABEL: nl_cli_addr_parse_label(addr, optarg); break;
            case ARG_PEER: nl_cli_addr_parse_peer(addr, optarg); break;
            case ARG_SCOPE: nl_cli_addr_parse_scope(addr, optarg); break;
            case ARG_BROADCAST: nl_cli_addr_parse_broadcast(addr, optarg); break;
            case ARG_PREFERRED: nl_cli_addr_parse_preferred(addr, optarg); break;
            case ARG_VALID: nl_cli_addr_parse_valid(addr, optarg); break;
            }
      }

      if (dump_env)
            nl_cache_foreach_filter(addr_cache, OBJ_CAST(addr), env_dump,
                              &params);
      else
            nl_cache_dump_filter(addr_cache, &params, OBJ_CAST(addr));

      return 0;
}

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