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/***
This file is part of systemd.
Copyright 2014 Susant Sahani
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <arpa/inet.h>
#include <libkmod.h>
#include <linux/ip.h>
#include <net/if.h>
#include <linux/if_tunnel.h>
#include <systemd/sd-netlink.h>
#include "macro.h"
#include "util.h"
static int load_module(const char *mod_name) {
struct kmod_ctx *ctx;
struct kmod_list *list = NULL, *l;
int r;
ctx = kmod_new(NULL, NULL);
if (!ctx) {
kmod_unref(ctx);
return -ENOMEM;
}
r = kmod_module_new_from_lookup(ctx, mod_name, &list);
if (r < 0)
return -1;
kmod_list_foreach(l, list) {
struct kmod_module *mod = kmod_module_get_module(l);
r = kmod_module_probe_insert_module(mod, 0, NULL, NULL, NULL, NULL);
if (r >= 0)
r = 0;
else
r = -1;
kmod_module_unref(mod);
}
kmod_module_unref_list(list);
kmod_unref(ctx);
return r;
}
static int test_tunnel_configure(sd_netlink *rtnl) {
int r;
sd_netlink_message *m, *n;
struct in_addr local, remote;
/* skip test if module cannot be loaded */
r = load_module("ipip");
if (r < 0)
return EXIT_TEST_SKIP;
if (getuid() != 0)
return EXIT_TEST_SKIP;
/* IPIP tunnel */
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
assert_se(m);
assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, "ipip-tunnel") >= 0);
assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, 1234)>= 0);
assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "ipip") >= 0);
inet_pton(AF_INET, "192.168.21.1", &local.s_addr);
assert_se(sd_netlink_message_append_u32(m, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
inet_pton(AF_INET, "192.168.21.2", &remote.s_addr);
assert_se(sd_netlink_message_append_u32(m, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
assert_se(sd_netlink_message_close_container(m) >= 0);
assert_se(sd_netlink_message_close_container(m) >= 0);
assert_se(sd_netlink_call(rtnl, m, -1, 0) == 1);
assert_se((m = sd_netlink_message_unref(m)) == NULL);
r = load_module("sit");
if (r < 0)
return EXIT_TEST_SKIP;
/* sit */
assert_se(sd_rtnl_message_new_link(rtnl, &n, RTM_NEWLINK, 0) >= 0);
assert_se(n);
assert_se(sd_netlink_message_append_string(n, IFLA_IFNAME, "sit-tunnel") >= 0);
assert_se(sd_netlink_message_append_u32(n, IFLA_MTU, 1234)>= 0);
assert_se(sd_netlink_message_open_container(n, IFLA_LINKINFO) >= 0);
assert_se(sd_netlink_message_open_container_union(n, IFLA_INFO_DATA, "sit") >= 0);
assert_se(sd_netlink_message_append_u8(n, IFLA_IPTUN_PROTO, IPPROTO_IPIP) >= 0);
inet_pton(AF_INET, "192.168.21.3", &local.s_addr);
assert_se(sd_netlink_message_append_u32(n, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
inet_pton(AF_INET, "192.168.21.4", &remote.s_addr);
assert_se(sd_netlink_message_append_u32(n, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
assert_se(sd_netlink_message_close_container(n) >= 0);
assert_se(sd_netlink_message_close_container(n) >= 0);
assert_se(sd_netlink_call(rtnl, n, -1, 0) == 1);
assert_se((n = sd_netlink_message_unref(n)) == NULL);
return EXIT_SUCCESS;
}
int main(int argc, char *argv[]) {
sd_netlink *rtnl;
int r;
assert_se(sd_netlink_open(&rtnl) >= 0);
assert_se(rtnl);
r = test_tunnel_configure(rtnl);
assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
return r;
}
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