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/* SPDX-License-Identifier: LGPL-2.1-only */
/*
* Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
*/
#include <netlink/cli/utils.h>
#include <netlink/cli/route.h>
#include <netlink/cli/link.h>
#include <linux/rtnetlink.h>
static void print_usage(void)
{
printf("Usage: nl-route-get <addr>\n");
exit(1);
}
static void parse_cb(struct nl_object *obj, void *arg)
{
//struct rtnl_route *route = (struct rtnl_route *) obj;
struct nl_dump_params params = {
.dp_fd = stdout,
.dp_type = NL_DUMP_DETAILS,
};
nl_object_dump(obj, ¶ms);
}
static int cb(struct nl_msg *msg, void *arg)
{
int err;
if ((err = nl_msg_parse(msg, &parse_cb, NULL)) < 0)
nl_cli_fatal(err, "Unable to parse object: %s", nl_geterror(err));
return 0;
}
int main(int argc, char *argv[])
{
struct nl_sock *sock;
struct nl_addr *dst;
int err = 1;
if (argc < 2 || !strcmp(argv[1], "-h"))
print_usage();
sock = nl_cli_alloc_socket();
nl_cli_connect(sock, NETLINK_ROUTE);
nl_cli_link_alloc_cache(sock);
nl_cli_route_alloc_cache(sock, 0);
dst = nl_cli_addr_parse(argv[1], AF_INET);
{
struct nl_msg *m;
struct rtmsg rmsg = {
.rtm_family = nl_addr_get_family(dst),
.rtm_dst_len = nl_addr_get_prefixlen(dst),
};
m = nlmsg_alloc_simple(RTM_GETROUTE, 0);
if (!m)
nl_cli_fatal(ENOMEM, "out of memory");
if (nlmsg_append(m, &rmsg, sizeof(rmsg), NLMSG_ALIGNTO) < 0)
nl_cli_fatal(ENOMEM, "out of memory");
if (nla_put_addr(m, RTA_DST, dst) < 0)
nl_cli_fatal(ENOMEM, "out of memory");
err = nl_send_auto_complete(sock, m);
nlmsg_free(m);
if (err < 0)
nl_cli_fatal(err, "%s", nl_geterror(err));
nl_socket_modify_cb(sock, NL_CB_VALID, NL_CB_CUSTOM, cb, NULL);
if (nl_recvmsgs_default(sock) < 0)
nl_cli_fatal(err, "%s", nl_geterror(err));
}
return 0;
}
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