/*
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "tests.h"
#include <stdio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "test_nlattr.h"
#include <linux/ip.h>
#include <linux/rtnetlink.h>
#define RTA_ENCAP_TYPE 21
#define LWTUNNEL_ENCAP_NONE 0
static void
init_rtmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
{
SET_STRUCT(struct nlmsghdr, nlh,
.nlmsg_len = msg_len,
.nlmsg_type = RTM_GETROUTE,
.nlmsg_flags = NLM_F_DUMP
);
struct rtmsg *const msg = NLMSG_DATA(nlh);
SET_STRUCT(struct rtmsg, msg,
.rtm_family = AF_UNIX,
.rtm_tos = IPTOS_LOWDELAY,
.rtm_table = RT_TABLE_DEFAULT,
.rtm_protocol = RTPROT_KERNEL,
.rtm_scope = RT_SCOPE_UNIVERSE,
.rtm_type = RTN_LOCAL,
.rtm_flags = RTM_F_NOTIFY
);
}
static void
print_rtmsg(const unsigned int msg_len)
{
printf("{len=%u, type=RTM_GETROUTE, flags=NLM_F_DUMP"
", seq=0, pid=0}, {rtm_family=AF_UNIX"
", rtm_dst_len=0, rtm_src_len=0"
", rtm_tos=IPTOS_LOWDELAY"
", rtm_table=RT_TABLE_DEFAULT"
", rtm_protocol=RTPROT_KERNEL"
", rtm_scope=RT_SCOPE_UNIVERSE"
", rtm_type=RTN_LOCAL"
", rtm_flags=RTM_F_NOTIFY}",
msg_len);
}
int
main(void)
{
skip_if_unavailable("/proc/self/fd/");
const int fd = create_nl_socket(NETLINK_ROUTE);
const unsigned int hdrlen = sizeof(struct rtmsg);
void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
static char pattern[4096];
fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
char nla_type_str[256];
sprintf(nla_type_str, "%#x /* RTA_??? */", nla_type);
TEST_NLATTR_(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
nla_type, nla_type_str,
4, pattern, 4,
print_quoted_hex(pattern, 4));
TEST_NLATTR(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_DST, 4, pattern, 4,
print_quoted_hex(pattern, 4));
const uint32_t ifindex = ifindex_lo();
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_OIF, pattern, ifindex,
printf(IFINDEX_LO_STR));
const uint32_t rt_class_id = RT_TABLE_DEFAULT;
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_TABLE, pattern, rt_class_id,
printf("RT_TABLE_DEFAULT"));
struct nlattr nla = {
.nla_type = RTAX_LOCK,
.nla_len = sizeof(nla)
};
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_METRICS, pattern, nla,
printf("{nla_len=%u, nla_type=RTAX_LOCK}",
nla.nla_len));
struct rtnexthop nh = {
.rtnh_len = sizeof(nh) - 1,
.rtnh_flags = RTNH_F_DEAD,
.rtnh_hops = 0xab,
.rtnh_ifindex = ifindex_lo()
};
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_MULTIPATH, pattern, nh,
printf("{rtnh_len=%u, rtnh_flags=RTNH_F_DEAD"
", rtnh_hops=%u"
", rtnh_ifindex=" IFINDEX_LO_STR "}",
nh.rtnh_len, nh.rtnh_hops));
char buf[RTNH_ALIGN(sizeof(nh)) + sizeof(nla)];
nh.rtnh_len = sizeof(buf);
nla.nla_type = RTA_DST;
memcpy(buf, &nh, sizeof(nh));
memcpy(buf + RTNH_ALIGN(sizeof(nh)), &nla, sizeof(nla));
TEST_NLATTR(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_MULTIPATH, sizeof(buf), buf, sizeof(buf),
printf("{rtnh_len=%u, rtnh_flags=RTNH_F_DEAD"
", rtnh_hops=%u, rtnh_ifindex=" IFINDEX_LO_STR "}"
", {nla_len=%u, nla_type=RTA_DST}",
nh.rtnh_len, nh.rtnh_hops, nla.nla_len));
static const struct rta_cacheinfo ci = {
.rta_clntref = 0xabcdefab,
.rta_lastuse = 0xbdadaedc,
.rta_expires = 0xcdadebad,
.rta_error = 0xdaedadeb,
.rta_used = 0xedfabdad,
.rta_id = 0xfeadbcda,
.rta_ts = 0xacdbaded,
.rta_tsage = 0xbadeadef
};
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_CACHEINFO, pattern, ci,
PRINT_FIELD_U("{", ci, rta_clntref);
PRINT_FIELD_U(", ", ci, rta_lastuse);
PRINT_FIELD_U(", ", ci, rta_expires);
PRINT_FIELD_U(", ", ci, rta_error);
PRINT_FIELD_U(", ", ci, rta_used);
PRINT_FIELD_X(", ", ci, rta_id);
PRINT_FIELD_U(", ", ci, rta_ts);
PRINT_FIELD_U(", ", ci, rta_tsage);
printf("}"));
#ifdef HAVE_STRUCT_RTA_MFC_STATS
static const struct rta_mfc_stats mfcs = {
.mfcs_packets = 0xadcdedfdadefadcd,
.mfcs_bytes = 0xbaedadedcdedadbd,
.mfcs_wrong_if = 0xcddeabeedaedabfa
};
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_MFC_STATS, pattern, mfcs,
PRINT_FIELD_U("{", mfcs, mfcs_packets);
PRINT_FIELD_U(", ", mfcs, mfcs_bytes);
PRINT_FIELD_U(", ", mfcs, mfcs_wrong_if);
printf("}"));
#endif
#ifdef HAVE_STRUCT_RTVIA
static const struct rtvia via = {
.rtvia_family = AF_INET
};
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_VIA, pattern, via,
printf("{rtvia_family=AF_INET}"));
static const char address4[] = "12.34.56.78";
struct in_addr a4 = {
.s_addr = inet_addr(address4)
};
char rtviabuf[sizeof(via) + sizeof(a4)];
memcpy(rtviabuf, &via, sizeof(via));
memcpy(rtviabuf + sizeof(via), &a4, sizeof(a4));
TEST_NLATTR(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_VIA, sizeof(rtviabuf), rtviabuf, sizeof(rtviabuf),
printf("{rtvia_family=AF_INET"
", rtvia_addr=inet_addr(\"%s\")}", address4));
#endif
const uint16_t encap_type = LWTUNNEL_ENCAP_NONE;
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
RTA_ENCAP_TYPE, pattern, encap_type,
printf("LWTUNNEL_ENCAP_NONE"));
puts("+++ exited with 0 +++");
return 0;
}