src/test/test-netlink-manual.c

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