src/test/test-netlink-manual.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 /* Make sure the net/if.h header is included before any linux/ one */
   4 #include <net/if.h>
   5 #include <arpa/inet.h>
   6 #include <linux/if_tunnel.h>
   7 #include <linux/ip.h>
   8 #include <sys/types.h>
   9 #include <unistd.h>
  10
  11 #include "sd-netlink.h"
  12
  13 #include "macro.h"
  14 #include "module-util.h"
  15 #include "tests.h"
  16
  17 static int load_module(const char *mod_name) {
  18         _cleanup_(sym_kmod_unrefp) struct kmod_ctx *ctx = NULL;
  19         _cleanup_(sym_kmod_module_unref_listp) struct kmod_list *list = NULL;
  20         struct kmod_list *l;
  21         int r;
  22
  23         r = dlopen_libkmod();
  24         if (r < 0)
  25                 return log_error_errno(r, "Failed to load libkmod: %m");
  26
  27         ctx = sym_kmod_new(NULL, NULL);
  28         if (!ctx)
  29                 return log_oom();
  30
  31         r = sym_kmod_module_new_from_lookup(ctx, mod_name, &list);
  32         if (r < 0)
  33                 return r;
  34
  35         sym_kmod_list_foreach(l, list) {
  36                 _cleanup_(sym_kmod_module_unrefp) struct kmod_module *mod = NULL;
  37
  38                 mod = sym_kmod_module_get_module(l);
  39
  40                 r = sym_kmod_module_probe_insert_module(mod, 0, NULL, NULL, NULL, NULL);
  41                 if (r > 0)
  42                         r = -EINVAL;
  43         }
  44
  45         return r;
  46 }
  47
  48 static int test_tunnel_configure(sd_netlink *rtnl) {
  49         int r;
  50         sd_netlink_message *m, *n;
  51         struct in_addr local, remote;
  52
  53         /* skip test if module cannot be loaded */
  54         r = load_module("ipip");
  55         if (r < 0)
  56                 return log_tests_skipped_errno(r, "failed to load module 'ipip'");
  57
  58         r = load_module("sit");
  59         if (r < 0)
  60                 return log_tests_skipped_errno(r, "failed to load module 'sit'");
  61
  62         if (getuid() != 0)
  63                 return log_tests_skipped("not root");
  64
  65         /* IPIP tunnel */
  66         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
  67         assert_se(m);
  68
  69         assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, "ipip-tunnel") >= 0);
  70         assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, 1234)>= 0);
  71
  72         assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
  73
  74         assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "ipip") >= 0);
  75
  76         inet_pton(AF_INET, "192.168.21.1", &local.s_addr);
  77         assert_se(sd_netlink_message_append_u32(m, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
  78
  79         inet_pton(AF_INET, "192.168.21.2", &remote.s_addr);
  80         assert_se(sd_netlink_message_append_u32(m, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
  81
  82         assert_se(sd_netlink_message_close_container(m) >= 0);
  83         assert_se(sd_netlink_message_close_container(m) >= 0);
  84
  85         assert_se(sd_netlink_call(rtnl, m, -1, 0) == 1);
  86
  87         assert_se((m = sd_netlink_message_unref(m)) == NULL);
  88
  89         /* sit */
  90         assert_se(sd_rtnl_message_new_link(rtnl, &n, RTM_NEWLINK, 0) >= 0);
  91         assert_se(n);
  92
  93         assert_se(sd_netlink_message_append_string(n, IFLA_IFNAME, "sit-tunnel") >= 0);
  94         assert_se(sd_netlink_message_append_u32(n, IFLA_MTU, 1234)>= 0);
  95
  96         assert_se(sd_netlink_message_open_container(n, IFLA_LINKINFO) >= 0);
  97
  98         assert_se(sd_netlink_message_open_container_union(n, IFLA_INFO_DATA, "sit") >= 0);
  99
 100         assert_se(sd_netlink_message_append_u8(n, IFLA_IPTUN_PROTO, IPPROTO_IPIP) >= 0);
 101
 102         inet_pton(AF_INET, "192.168.21.3", &local.s_addr);
 103         assert_se(sd_netlink_message_append_u32(n, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
 104
 105         inet_pton(AF_INET, "192.168.21.4", &remote.s_addr);
 106         assert_se(sd_netlink_message_append_u32(n, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
 107
 108         assert_se(sd_netlink_message_close_container(n) >= 0);
 109         assert_se(sd_netlink_message_close_container(n) >= 0);
 110
 111         assert_se(sd_netlink_call(rtnl, n, -1, 0) == 1);
 112
 113         assert_se((n = sd_netlink_message_unref(n)) == NULL);
 114
 115         return EXIT_SUCCESS;
 116 }
 117
 118 int main(int argc, char *argv[]) {
 119         sd_netlink *rtnl;
 120         int r;
 121
 122         test_setup_logging(LOG_INFO);
 123
 124         assert_se(sd_netlink_open(&rtnl) >= 0);
 125         assert_se(rtnl);
 126
 127         r = test_tunnel_configure(rtnl);
 128
 129         assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
 130
 131         return r;
 132 }