rt-addr.c

 1// SPDX-License-Identifier: GPL-2.0
 2#include <stdio.h>
 3#include <string.h>
 4
 5#include <ynl.h>
 6
 7#include <arpa/inet.h>
 8#include <net/if.h>
 9
10#include "rt-addr-user.h"
11
12static void rt_addr_print(struct rt_addr_getaddr_rsp *a)
13{
14	char ifname[IF_NAMESIZE];
15	char addr_str[64];
16	const char *addr;
17	const char *name;
18
19	name = if_indextoname(a->_hdr.ifa_index, ifname);
20	if (name)
21		printf("%16s: ", name);
22
23	switch (a->_len.address) {
24	case 4:
25		addr = inet_ntop(AF_INET, a->address,
26				 addr_str, sizeof(addr_str));
27		break;
28	case 16:
29		addr = inet_ntop(AF_INET6, a->address,
30				 addr_str, sizeof(addr_str));
31		break;
32	default:
33		addr = NULL;
34		break;
35	}
36	if (addr)
37		printf("%s", addr);
38	else
39		printf("[%d]", a->_len.address);
40
41	printf("\n");
42}
43
44int main(int argc, char **argv)
45{
46	struct rt_addr_getaddr_list *rsp;
47	struct rt_addr_getaddr_req *req;
48	struct ynl_error yerr;
49	struct ynl_sock *ys;
50
51	ys = ynl_sock_create(&ynl_rt_addr_family, &yerr);
52	if (!ys) {
53		fprintf(stderr, "YNL: %s\n", yerr.msg);
54		return 1;
55	}
56
57	req = rt_addr_getaddr_req_alloc();
58	if (!req)
59		goto err_destroy;
60
61	rsp = rt_addr_getaddr_dump(ys, req);
62	rt_addr_getaddr_req_free(req);
63	if (!rsp)
64		goto err_close;
65
66	if (ynl_dump_empty(rsp))
67		fprintf(stderr, "Error: no addresses reported\n");
68	ynl_dump_foreach(rsp, addr)
69		rt_addr_print(addr);
70	rt_addr_getaddr_list_free(rsp);
71
72	ynl_sock_destroy(ys);
73	return 0;
74
75err_close:
76	fprintf(stderr, "YNL: %s\n", ys->err.msg);
77err_destroy:
78	ynl_sock_destroy(ys);
79	return 2;
80}