libnl  3.3.0
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 #include <linux/netlink.h>
16 
17 static void print_usage(void)
18 {
19  printf(
20 "Usage: nl-addr-list [OPTION]... [ADDRESS]\n"
21 "\n"
22 "Options\n"
23 " --details Show details on multiple lines.\n"
24 " --env Print address details in sh env variable syntax.\n"
25 " --prefix=STRING Prefix each printed line.\n"
26 " -h, --help Show this help.\n"
27 " -v, --version Show versioning information.\n"
28 "\n"
29 "Address Selection\n"
30 " -a, --local=ADDR Local address.\n"
31 " -d, --dev=DEV Associated network device.\n"
32 " --family=FAMILY Family of local address.\n"
33 " --label=STRING Address label (IPv4).\n"
34 " --peer=ADDR Peer address (IPv4).\n"
35 " --scope=SCOPE Address scope (IPv4).\n"
36 " --broadcast=ADDR Broadcast address of network (IPv4).\n"
37 " --valid-lifetime=TS Valid lifetime before route expires (IPv6).\n"
38 " --preferred=TIME Preferred lifetime (IPv6).\n"
39 " --valid=TIME Valid lifetime (IPv6).\n"
40  );
41  exit(0);
42 }
43 
44 static char *prefix;
45 
46 static void print_prefix(struct nl_dump_params *p, int line)
47 {
48  if (prefix)
49  nl_dump(p, "%s", prefix);
50 }
51 
52 static void env_dump(struct nl_object *obj, void *arg)
53 {
54  struct nl_dump_params *p = arg;
55  struct rtnl_addr *addr = (struct rtnl_addr *) obj;
56  struct nl_cache *link_cache;
57  struct nl_addr *a;
58  static int index = 0;
59  char buf[128], pfx[32], *s;
60 
61  snprintf(pfx, sizeof(pfx), "ADDR%d", index++);
62 
63  nl_dump_line(p, "%s_FAMILY=%s\n", pfx,
64  nl_af2str(rtnl_addr_get_family(addr), buf, sizeof(buf)));
65 
66  nl_dump_line(p, "%s_LOCAL=%s\n", pfx,
67  nl_addr2str(rtnl_addr_get_local(addr), buf, sizeof(buf)));
68 
69  nl_dump_line(p, "%s_IFINDEX=%u\n", pfx, rtnl_addr_get_ifindex(addr));
70  link_cache = nl_cache_mngt_require_safe("route/link");
71  if (link_cache)
72  nl_dump_line(p, "%s_IFNAME=%s\n", pfx,
73  rtnl_link_i2name(link_cache,
74  rtnl_addr_get_ifindex(addr),
75  buf, sizeof(buf)));
76 
77  if ((a = rtnl_addr_get_peer(addr)))
78  nl_dump_line(p, "%s_PEER=%s\n", pfx,
79  nl_addr2str(a, buf, sizeof(buf)));
80 
81  if ((a = rtnl_addr_get_broadcast(addr)))
82  nl_dump_line(p, "%s_BROADCAST=%s\n", pfx,
83  nl_addr2str(a, buf, sizeof(buf)));
84 
85  nl_dump_line(p, "%s_SCOPE=%s\n", pfx,
86  rtnl_scope2str(rtnl_addr_get_scope(addr),
87  buf, sizeof(buf)));
88 
89  if ((s = rtnl_addr_get_label(addr)))
90  nl_dump_line(p, "%s_LABEL=%s\n", pfx, s);
91 
92  rtnl_addr_flags2str(rtnl_addr_get_flags(addr), buf, sizeof(buf));
93  if (buf[0])
94  nl_dump_line(p, "%s_FLAGS=%s\n", pfx, buf);
95 
96  nl_dump_line(p, "%s_CACHEINFO_VALID=%u\n", pfx,
97  rtnl_addr_get_valid_lifetime(addr));
98 
99  if (link_cache)
100  nl_cache_put(link_cache);
101 
102 #if 0
103  if (addr->ce_mask & ADDR_ATTR_CACHEINFO) {
104  struct rtnl_addr_cacheinfo *ci = &addr->a_cacheinfo;
105 
106  nl_dump_line(p, "ADDR_CACHEINFO_PREFERRED=%u\n",
107  ci->aci_prefered);
108 
109  nl_dump_line(p, "ADDR_CACHEINFO_CREATED=%u\n", ci->aci_cstamp);
110  nl_dump_line(p, "ADDR_CACHEINFO_LASTUPDATE=%u\n",
111  ci->aci_tstamp);
112  }
113 #endif
114 }
115 
116 int main(int argc, char *argv[])
117 {
118  struct nl_sock *sock;
119  struct rtnl_addr *addr;
120  struct nl_cache *link_cache, *addr_cache;
121  struct nl_dump_params params = {
123  .dp_nl_cb = print_prefix,
124  .dp_fd = stdout,
125  };
126  int dump_env = 0;
127 
128  sock = nl_cli_alloc_socket();
129  nl_cli_connect(sock, NETLINK_ROUTE);
130  link_cache = nl_cli_link_alloc_cache(sock);
131  addr_cache = nl_cli_addr_alloc_cache(sock);
132  addr = nl_cli_addr_alloc();
133 
134  for (;;) {
135  int c, optidx = 0;
136  enum {
137  ARG_FAMILY = 257,
138  ARG_LABEL = 258,
139  ARG_PEER,
140  ARG_SCOPE,
141  ARG_BROADCAST,
142  ARG_DETAILS,
143  ARG_ENV,
144  ARG_PREFIX,
145  ARG_PREFERRED,
146  ARG_VALID,
147  };
148  static struct option long_opts[] = {
149  { "details", 0, 0, ARG_DETAILS },
150  { "env", 0, 0, ARG_ENV },
151  { "prefix", 1, 0, ARG_PREFIX },
152  { "help", 0, 0, 'h' },
153  { "version", 0, 0, 'v' },
154  { "local", 1, 0, 'a' },
155  { "dev", 1, 0, 'd' },
156  { "family", 1, 0, ARG_FAMILY },
157  { "label", 1, 0, ARG_LABEL },
158  { "peer", 1, 0, ARG_PEER },
159  { "scope", 1, 0, ARG_SCOPE },
160  { "broadcast", 1, 0, ARG_BROADCAST },
161  { "preferred", 1, 0, ARG_PREFERRED },
162  { "valid", 1, 0, ARG_VALID },
163  { 0, 0, 0, 0 }
164  };
165 
166  c = getopt_long(argc, argv, "46hva:d:", long_opts, &optidx);
167  if (c == -1)
168  break;
169 
170  switch (c) {
171  case '?': exit(NLE_INVAL);
172  case '4': rtnl_addr_set_family(addr, AF_INET); break;
173  case '6': rtnl_addr_set_family(addr, AF_INET6); break;
174  case ARG_DETAILS: params.dp_type = NL_DUMP_DETAILS; break;
175  case ARG_ENV: dump_env = 1; break;
176  case ARG_PREFIX: prefix = strdup(optarg); break;
177  case 'h': print_usage(); break;
178  case 'v': nl_cli_print_version(); break;
179  case 'a': nl_cli_addr_parse_local(addr, optarg); break;
180  case 'd': nl_cli_addr_parse_dev(addr, link_cache, optarg); break;
181  case ARG_FAMILY: nl_cli_addr_parse_family(addr, optarg); break;
182  case ARG_LABEL: nl_cli_addr_parse_label(addr, optarg); break;
183  case ARG_PEER: nl_cli_addr_parse_peer(addr, optarg); break;
184  case ARG_SCOPE: nl_cli_addr_parse_scope(addr, optarg); break;
185  case ARG_BROADCAST: nl_cli_addr_parse_broadcast(addr, optarg); break;
186  case ARG_PREFERRED: nl_cli_addr_parse_preferred(addr, optarg); break;
187  case ARG_VALID: nl_cli_addr_parse_valid(addr, optarg); break;
188  }
189  }
190 
191  if (dump_env)
192  nl_cache_foreach_filter(addr_cache, OBJ_CAST(addr), env_dump,
193  &params);
194  else
195  nl_cache_dump_filter(addr_cache, &params, OBJ_CAST(addr));
196 
197  return 0;
198 }
Dump object briefly on one line.
Definition: types.h:22
struct nl_cache * nl_cache_mngt_require_safe(const char *name)
Return cache previously provided via nl_cache_mngt_provide()
Definition: cache_mngt.c:430
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:38
void nl_cache_dump_filter(struct nl_cache *cache, struct nl_dump_params *params, struct nl_object *filter)
Dump all elements of a cache (filtered).
Definition: cache.c:1216
void nl_cache_foreach_filter(struct nl_cache *cache, struct nl_object *filter, void(*cb)(struct nl_object *, void *), void *arg)
Call a callback on each element of the cache (filtered).
Definition: cache.c:1282
Dump all attributes but no statistics.
Definition: types.h:23
Dumping parameters.
Definition: types.h:33
void nl_dump(struct nl_dump_params *params, const char *fmt,...)
Dump a formatted character string.
Definition: utils.c:961
char * nl_addr2str(const struct nl_addr *addr, char *buf, size_t size)
Convert abstract address object to character string.
Definition: addr.c:963