/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** 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 "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; }