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1 office 1 /*
2 * src/nl-route-get.c Get Route Attributes
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) 2003-2009 Thomas Graf <tgraf@suug.ch>
10 */
11  
12 #include <netlink/cli/utils.h>
13 #include <netlink/cli/route.h>
14 #include <netlink/cli/link.h>
15  
16 static void print_usage(void)
17 {
18 printf("Usage: nl-route-get <addr>\n");
19 exit(1);
20 }
21  
22 static void parse_cb(struct nl_object *obj, void *arg)
23 {
24 //struct rtnl_route *route = (struct rtnl_route *) obj;
25 struct nl_dump_params params = {
26 .dp_fd = stdout,
27 .dp_type = NL_DUMP_DETAILS,
28 };
29  
30 nl_object_dump(obj, &params);
31 }
32  
33 static int cb(struct nl_msg *msg, void *arg)
34 {
35 int err;
36  
37 if ((err = nl_msg_parse(msg, &parse_cb, NULL)) < 0)
38 nl_cli_fatal(err, "Unable to parse object: %s", nl_geterror(err));
39  
40 return 0;
41 }
42  
43 int main(int argc, char *argv[])
44 {
45 struct nl_sock *sock;
46 struct nl_cache *link_cache, *route_cache;
47 struct nl_addr *dst;
48 int err = 1;
49  
50 if (argc < 2 || !strcmp(argv[1], "-h"))
51 print_usage();
52  
53 sock = nl_cli_alloc_socket();
54 nl_cli_connect(sock, NETLINK_ROUTE);
55 link_cache = nl_cli_link_alloc_cache(sock);
56 route_cache = nl_cli_route_alloc_cache(sock, 0);
57  
58 dst = nl_cli_addr_parse(argv[1], AF_INET);
59  
60 {
61 struct nl_msg *m;
62 struct rtmsg rmsg = {
63 .rtm_family = nl_addr_get_family(dst),
64 .rtm_dst_len = nl_addr_get_prefixlen(dst),
65 };
66  
67 m = nlmsg_alloc_simple(RTM_GETROUTE, 0);
68 nlmsg_append(m, &rmsg, sizeof(rmsg), NLMSG_ALIGNTO);
69 nla_put_addr(m, RTA_DST, dst);
70  
71 err = nl_send_auto_complete(sock, m);
72 nlmsg_free(m);
73 if (err < 0)
74 nl_cli_fatal(err, "%s", nl_geterror(err));
75  
76 nl_socket_modify_cb(sock, NL_CB_VALID, NL_CB_CUSTOM, cb, NULL);
77  
78 if (nl_recvmsgs_default(sock) < 0)
79 nl_cli_fatal(err, "%s", nl_geterror(err));
80 }
81  
82 //nl_cache_dump(route_cache, &params);
83  
84 return 0;
85 }