rt-route.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-route-user.h"
11
12static void rt_route_print(struct rt_route_getroute_rsp *r)
13{
14	char ifname[IF_NAMESIZE];
15	char route_str[64];
16	const char *route;
17	const char *name;
18
19	/* Ignore local */
20	if (r->_hdr.rtm_table == RT_TABLE_LOCAL)
21		return;
22
23	if (r->_present.oif) {
24		name = if_indextoname(r->oif, ifname);
25		if (name)
26			printf("oif: %-16s ", name);
27	}
28
29	if (r->_len.dst) {
30		route = inet_ntop(r->_hdr.rtm_family, r->dst,
31				  route_str, sizeof(route_str));
32		printf("dst: %s/%d", route, r->_hdr.rtm_dst_len);
33	}
34
35	if (r->_len.gateway) {
36		route = inet_ntop(r->_hdr.rtm_family, r->gateway,
37				  route_str, sizeof(route_str));
38		printf("gateway: %s ", route);
39	}
40
41	printf("\n");
42}
43
44int main(int argc, char **argv)
45{
46	struct rt_route_getroute_req_dump *req;
47	struct rt_route_getroute_list *rsp;
48	struct ynl_error yerr;
49	struct ynl_sock *ys;
50
51	ys = ynl_sock_create(&ynl_rt_route_family, &yerr);
52	if (!ys) {
53		fprintf(stderr, "YNL: %s\n", yerr.msg);
54		return 1;
55	}
56
57	req = rt_route_getroute_req_dump_alloc();
58	if (!req)
59		goto err_destroy;
60
61	rsp = rt_route_getroute_dump(ys, req);
62	rt_route_getroute_req_dump_free(req);
63	if (!rsp)
64		goto err_close;
65
66	if (ynl_dump_empty(rsp))
67		fprintf(stderr, "Error: no routeesses reported\n");
68	ynl_dump_foreach(rsp, route)
69		rt_route_print(route);
70	rt_route_getroute_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}