libnl  3.2.24-rc1
nl-addr-list.c
1 /*
2  * src/nl-addr-list.c List addresses
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation version 2 of the License.
7  *
8  * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
9  */
10 
11 #include <netlink/cli/utils.h>
12 #include <netlink/cli/addr.h>
13 #include <netlink/cli/link.h>
14 
15 static void print_usage(void)
16 {
17  printf(
18 "Usage: nl-addr-list [OPTION]... [ADDRESS]\n"
19 "\n"
20 "Options\n"
21 " --details Show details on multiple lines.\n"
22 " --env Print address details in sh env variable syntax.\n"
23 " --prefix=STRING Prefix each printed line.\n"
24 " -h, --help Show this help.\n"
25 " -v, --version Show versioning information.\n"
26 "\n"
27 "Address Selection\n"
28 " -a, --local=ADDR Local address.\n"
29 " -d, --dev=DEV Associated network device.\n"
30 " --family=FAMILY Family of local address.\n"
31 " --label=STRING Address label (IPv4).\n"
32 " --peer=ADDR Peer address (IPv4).\n"
33 " --scope=SCOPE Address scope (IPv4).\n"
34 " --broadcast=ADDR Broadcast address of network (IPv4).\n"
35 " --valid-lifetime=TS Valid lifetime before route expires (IPv6).\n"
36 " --preferred=TIME Preferred lifetime (IPv6).\n"
37 " --valid=TIME Valid lifetime (IPv6).\n"
38  );
39  exit(0);
40 }
41 
42 static char *prefix;
43 
44 static void print_prefix(struct nl_dump_params *p, int line)
45 {
46  if (prefix)
47  nl_dump(p, "%s", prefix);
48 }
49 
50 static void env_dump(struct nl_object *obj, void *arg)
51 {
52  struct nl_dump_params *p = arg;
53  struct rtnl_addr *addr = (struct rtnl_addr *) obj;
54  struct nl_cache *link_cache;
55  struct nl_addr *a;
56  static int index = 0;
57  char buf[128], pfx[32], *s;
58 
59  snprintf(pfx, sizeof(pfx), "ADDR%d", index++);
60 
61  nl_dump_line(p, "%s_FAMILY=%s\n", pfx,
62  nl_af2str(rtnl_addr_get_family(addr), buf, sizeof(buf)));
63 
64  nl_dump_line(p, "%s_LOCAL=%s\n", pfx,
65  nl_addr2str(rtnl_addr_get_local(addr), buf, sizeof(buf)));
66 
67  nl_dump_line(p, "%s_IFINDEX=%u\n", pfx, rtnl_addr_get_ifindex(addr));
68  link_cache = nl_cache_mngt_require_safe("route/link");
69  if (link_cache)
70  nl_dump_line(p, "%s_IFNAME=%s\n", pfx,
71  rtnl_link_i2name(link_cache,
72  rtnl_addr_get_ifindex(addr),
73  buf, sizeof(buf)));
74 
75  if ((a = rtnl_addr_get_peer(addr)))
76  nl_dump_line(p, "%s_PEER=%s\n", pfx,
77  nl_addr2str(a, buf, sizeof(buf)));
78 
79  if ((a = rtnl_addr_get_broadcast(addr)))
80  nl_dump_line(p, "%s_BROADCAST=%s\n", pfx,
81  nl_addr2str(a, buf, sizeof(buf)));
82 
83  nl_dump_line(p, "%s_SCOPE=%s\n", pfx,
84  rtnl_scope2str(rtnl_addr_get_scope(addr),
85  buf, sizeof(buf)));
86 
87  if ((s = rtnl_addr_get_label(addr)))
88  nl_dump_line(p, "%s_LABEL=%s\n", pfx, s);
89 
90  rtnl_addr_flags2str(rtnl_addr_get_flags(addr), buf, sizeof(buf));
91  if (buf[0])
92  nl_dump_line(p, "%s_FLAGS=%s\n", pfx, buf);
93 
94  nl_dump_line(p, "%s_CACHEINFO_VALID=%u\n", pfx,
95  rtnl_addr_get_valid_lifetime(addr));
96 
97  if (link_cache)
98  nl_cache_put(link_cache);
99 
100 #if 0
101  if (addr->ce_mask & ADDR_ATTR_CACHEINFO) {
102  struct rtnl_addr_cacheinfo *ci = &addr->a_cacheinfo;
103 
104  nl_dump_line(p, "ADDR_CACHEINFO_PREFERRED=%u\n",
105  ci->aci_prefered);
106 
107  nl_dump_line(p, "ADDR_CACHEINFO_CREATED=%u\n", ci->aci_cstamp);
108  nl_dump_line(p, "ADDR_CACHEINFO_LASTUPDATE=%u\n",
109  ci->aci_tstamp);
110  }
111 #endif
112 }
113 
114 int main(int argc, char *argv[])
115 {
116  struct nl_sock *sock;
117  struct rtnl_addr *addr;
118  struct nl_cache *link_cache, *addr_cache;
119  struct nl_dump_params params = {
120  .dp_type = NL_DUMP_LINE,
121  .dp_nl_cb = print_prefix,
122  .dp_fd = stdout,
123  };
124  int dump_env = 0;
125 
126  sock = nl_cli_alloc_socket();
127  nl_cli_connect(sock, NETLINK_ROUTE);
128  link_cache = nl_cli_link_alloc_cache(sock);
129  addr_cache = nl_cli_addr_alloc_cache(sock);
130  addr = nl_cli_addr_alloc();
131 
132  for (;;) {
133  int c, optidx = 0;
134  enum {
135  ARG_FAMILY = 257,
136  ARG_LABEL = 258,
137  ARG_PEER,
138  ARG_SCOPE,
139  ARG_BROADCAST,
140  ARG_DETAILS,
141  ARG_ENV,
142  ARG_PREFIX,
143  ARG_PREFERRED,
144  ARG_VALID,
145  };
146  static struct option long_opts[] = {
147  { "details", 0, 0, ARG_DETAILS },
148  { "env", 0, 0, ARG_ENV },
149  { "prefix", 1, 0, ARG_PREFIX },
150  { "help", 0, 0, 'h' },
151  { "version", 0, 0, 'v' },
152  { "local", 1, 0, 'a' },
153  { "dev", 1, 0, 'd' },
154  { "family", 1, 0, ARG_FAMILY },
155  { "label", 1, 0, ARG_LABEL },
156  { "peer", 1, 0, ARG_PEER },
157  { "scope", 1, 0, ARG_SCOPE },
158  { "broadcast", 1, 0, ARG_BROADCAST },
159  { "preferred", 1, 0, ARG_PREFERRED },
160  { "valid", 1, 0, ARG_VALID },
161  { 0, 0, 0, 0 }
162  };
163 
164  c = getopt_long(argc, argv, "46hva:d:", long_opts, &optidx);
165  if (c == -1)
166  break;
167 
168  switch (c) {
169  case '?': exit(NLE_INVAL);
170  case '4': rtnl_addr_set_family(addr, AF_INET); break;
171  case '6': rtnl_addr_set_family(addr, AF_INET6); break;
172  case ARG_DETAILS: params.dp_type = NL_DUMP_DETAILS; break;
173  case ARG_ENV: dump_env = 1; break;
174  case ARG_PREFIX: prefix = strdup(optarg); break;
175  case 'h': print_usage(); break;
176  case 'v': nl_cli_print_version(); break;
177  case 'a': nl_cli_addr_parse_local(addr, optarg); break;
178  case 'd': nl_cli_addr_parse_dev(addr, link_cache, optarg); break;
179  case ARG_FAMILY: nl_cli_addr_parse_family(addr, optarg); break;
180  case ARG_LABEL: nl_cli_addr_parse_label(addr, optarg); break;
181  case ARG_PEER: nl_cli_addr_parse_peer(addr, optarg); break;
182  case ARG_SCOPE: nl_cli_addr_parse_scope(addr, optarg); break;
183  case ARG_BROADCAST: nl_cli_addr_parse_broadcast(addr, optarg); break;
184  case ARG_PREFERRED: nl_cli_addr_parse_preferred(addr, optarg); break;
185  case ARG_VALID: nl_cli_addr_parse_valid(addr, optarg); break;
186  }
187  }
188 
189  if (dump_env)
190  nl_cache_foreach_filter(addr_cache, OBJ_CAST(addr), env_dump,
191  &params);
192  else
193  nl_cache_dump_filter(addr_cache, &params, OBJ_CAST(addr));
194 
195  return 0;
196 }