1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3 #include <arpa/inet.h>
4 #include <linux/if_tunnel.h>
5 #include <linux/ip.h>
6 #include <sys/types.h>
7 #include <unistd.h>
8
9 #include "sd-netlink.h"
10
11 #include "macro.h"
12 #include "module-util.h"
13 #include "tests.h"
14 #include "util.h"
15
load_module(const char * mod_name)16 static int load_module(const char *mod_name) {
17 _cleanup_(kmod_unrefp) struct kmod_ctx *ctx = NULL;
18 _cleanup_(kmod_module_unref_listp) struct kmod_list *list = NULL;
19 struct kmod_list *l;
20 int r;
21
22 ctx = kmod_new(NULL, NULL);
23 if (!ctx)
24 return log_oom();
25
26 r = kmod_module_new_from_lookup(ctx, mod_name, &list);
27 if (r < 0)
28 return r;
29
30 kmod_list_foreach(l, list) {
31 _cleanup_(kmod_module_unrefp) struct kmod_module *mod = NULL;
32
33 mod = kmod_module_get_module(l);
34
35 r = kmod_module_probe_insert_module(mod, 0, NULL, NULL, NULL, NULL);
36 if (r > 0)
37 r = -EINVAL;
38 }
39
40 return r;
41 }
42
test_tunnel_configure(sd_netlink * rtnl)43 static int test_tunnel_configure(sd_netlink *rtnl) {
44 int r;
45 sd_netlink_message *m, *n;
46 struct in_addr local, remote;
47
48 /* skip test if module cannot be loaded */
49 r = load_module("ipip");
50 if (r < 0)
51 return log_tests_skipped_errno(r, "failed to load module 'ipip'");
52
53 r = load_module("sit");
54 if (r < 0)
55 return log_tests_skipped_errno(r, "failed to load module 'sit'");
56
57 if (getuid() != 0)
58 return log_tests_skipped("not root");
59
60 /* IPIP tunnel */
61 assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
62 assert_se(m);
63
64 assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, "ipip-tunnel") >= 0);
65 assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, 1234)>= 0);
66
67 assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
68
69 assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "ipip") >= 0);
70
71 inet_pton(AF_INET, "192.168.21.1", &local.s_addr);
72 assert_se(sd_netlink_message_append_u32(m, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
73
74 inet_pton(AF_INET, "192.168.21.2", &remote.s_addr);
75 assert_se(sd_netlink_message_append_u32(m, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
76
77 assert_se(sd_netlink_message_close_container(m) >= 0);
78 assert_se(sd_netlink_message_close_container(m) >= 0);
79
80 assert_se(sd_netlink_call(rtnl, m, -1, 0) == 1);
81
82 assert_se((m = sd_netlink_message_unref(m)) == NULL);
83
84 /* sit */
85 assert_se(sd_rtnl_message_new_link(rtnl, &n, RTM_NEWLINK, 0) >= 0);
86 assert_se(n);
87
88 assert_se(sd_netlink_message_append_string(n, IFLA_IFNAME, "sit-tunnel") >= 0);
89 assert_se(sd_netlink_message_append_u32(n, IFLA_MTU, 1234)>= 0);
90
91 assert_se(sd_netlink_message_open_container(n, IFLA_LINKINFO) >= 0);
92
93 assert_se(sd_netlink_message_open_container_union(n, IFLA_INFO_DATA, "sit") >= 0);
94
95 assert_se(sd_netlink_message_append_u8(n, IFLA_IPTUN_PROTO, IPPROTO_IPIP) >= 0);
96
97 inet_pton(AF_INET, "192.168.21.3", &local.s_addr);
98 assert_se(sd_netlink_message_append_u32(n, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
99
100 inet_pton(AF_INET, "192.168.21.4", &remote.s_addr);
101 assert_se(sd_netlink_message_append_u32(n, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
102
103 assert_se(sd_netlink_message_close_container(n) >= 0);
104 assert_se(sd_netlink_message_close_container(n) >= 0);
105
106 assert_se(sd_netlink_call(rtnl, n, -1, 0) == 1);
107
108 assert_se((n = sd_netlink_message_unref(n)) == NULL);
109
110 return EXIT_SUCCESS;
111 }
112
main(int argc,char * argv[])113 int main(int argc, char *argv[]) {
114 sd_netlink *rtnl;
115 int r;
116
117 test_setup_logging(LOG_INFO);
118
119 assert_se(sd_netlink_open(&rtnl) >= 0);
120 assert_se(rtnl);
121
122 r = test_tunnel_configure(rtnl);
123
124 assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
125
126 return r;
127 }
128