/*
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* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
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* Copyright (c) 2017-2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <stdio.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "test_nlattr.h"
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#include <linux/ip.h>
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#include <linux/rtnetlink.h>
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#define RTA_ENCAP_TYPE 21
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#define LWTUNNEL_ENCAP_NONE 0
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static void
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init_rtmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
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{
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SET_STRUCT(struct nlmsghdr, nlh,
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.nlmsg_len = msg_len,
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.nlmsg_type = RTM_GETROUTE,
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.nlmsg_flags = NLM_F_DUMP
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);
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struct rtmsg *const msg = NLMSG_DATA(nlh);
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SET_STRUCT(struct rtmsg, msg,
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.rtm_family = AF_UNIX,
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.rtm_tos = IPTOS_LOWDELAY,
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.rtm_table = RT_TABLE_DEFAULT,
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.rtm_protocol = RTPROT_KERNEL,
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.rtm_scope = RT_SCOPE_UNIVERSE,
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.rtm_type = RTN_LOCAL,
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.rtm_flags = RTM_F_NOTIFY
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);
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}
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static void
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print_rtmsg(const unsigned int msg_len)
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{
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printf("{len=%u, type=RTM_GETROUTE, flags=NLM_F_DUMP"
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", seq=0, pid=0}, {rtm_family=AF_UNIX"
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", rtm_dst_len=0, rtm_src_len=0"
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", rtm_tos=IPTOS_LOWDELAY"
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", rtm_table=RT_TABLE_DEFAULT"
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", rtm_protocol=RTPROT_KERNEL"
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", rtm_scope=RT_SCOPE_UNIVERSE"
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", rtm_type=RTN_LOCAL"
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", rtm_flags=RTM_F_NOTIFY}",
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msg_len);
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}
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int
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main(void)
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{
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skip_if_unavailable("/proc/self/fd/");
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const int fd = create_nl_socket(NETLINK_ROUTE);
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const unsigned int hdrlen = sizeof(struct rtmsg);
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const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
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char nla_type_str[256];
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void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
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NLA_HDRLEN + sizeof(nla_type_str));
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static char pattern[4096];
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fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
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sprintf(nla_type_str, "%#x /* RTA_??? */", nla_type);
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TEST_NLATTR_(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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nla_type, nla_type_str,
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4, pattern, 4,
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print_quoted_hex(pattern, 4));
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TEST_NLATTR(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_DST, 4, pattern, 4,
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print_quoted_hex(pattern, 4));
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const uint32_t ifindex = ifindex_lo();
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TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_OIF, pattern, ifindex,
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printf(IFINDEX_LO_STR));
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const uint32_t rt_class_id = RT_TABLE_DEFAULT;
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TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_TABLE, pattern, rt_class_id,
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printf("RT_TABLE_DEFAULT"));
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struct nlattr nla = {
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.nla_type = RTAX_LOCK,
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.nla_len = sizeof(nla)
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};
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TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_METRICS, pattern, nla,
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printf("{nla_len=%u, nla_type=RTAX_LOCK}",
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nla.nla_len));
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struct rtnexthop nh = {
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.rtnh_len = sizeof(nh) - 1,
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.rtnh_flags = RTNH_F_DEAD,
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.rtnh_hops = 0xab,
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.rtnh_ifindex = ifindex_lo()
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};
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TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_MULTIPATH, pattern, nh,
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printf("{rtnh_len=%u, rtnh_flags=RTNH_F_DEAD"
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", rtnh_hops=%u"
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", rtnh_ifindex=" IFINDEX_LO_STR "}",
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nh.rtnh_len, nh.rtnh_hops));
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char buf[RTNH_ALIGN(sizeof(nh)) + sizeof(nla)];
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nh.rtnh_len = sizeof(buf);
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nla.nla_type = RTA_DST;
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memcpy(buf, &nh, sizeof(nh));
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memcpy(buf + RTNH_ALIGN(sizeof(nh)), &nla, sizeof(nla));
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TEST_NLATTR(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_MULTIPATH, sizeof(buf), buf, sizeof(buf),
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printf("{rtnh_len=%u, rtnh_flags=RTNH_F_DEAD"
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", rtnh_hops=%u, rtnh_ifindex=" IFINDEX_LO_STR "}"
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", {nla_len=%u, nla_type=RTA_DST}",
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nh.rtnh_len, nh.rtnh_hops, nla.nla_len));
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static const struct rta_cacheinfo ci = {
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.rta_clntref = 0xabcdefab,
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.rta_lastuse = 0xbdadaedc,
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.rta_expires = 0xcdadebad,
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.rta_error = 0xdaedadeb,
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.rta_used = 0xedfabdad,
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.rta_id = 0xfeadbcda,
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.rta_ts = 0xacdbaded,
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.rta_tsage = 0xbadeadef
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};
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TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_CACHEINFO, pattern, ci,
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PRINT_FIELD_U("{", ci, rta_clntref);
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PRINT_FIELD_U(", ", ci, rta_lastuse);
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PRINT_FIELD_U(", ", ci, rta_expires);
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PRINT_FIELD_U(", ", ci, rta_error);
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PRINT_FIELD_U(", ", ci, rta_used);
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PRINT_FIELD_X(", ", ci, rta_id);
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PRINT_FIELD_U(", ", ci, rta_ts);
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PRINT_FIELD_U(", ", ci, rta_tsage);
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printf("}"));
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#ifdef HAVE_STRUCT_RTA_MFC_STATS
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static const struct rta_mfc_stats mfcs = {
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.mfcs_packets = 0xadcdedfdadefadcd,
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.mfcs_bytes = 0xbaedadedcdedadbd,
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.mfcs_wrong_if = 0xcddeabeedaedabfa
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};
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TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_MFC_STATS, pattern, mfcs,
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PRINT_FIELD_U("{", mfcs, mfcs_packets);
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PRINT_FIELD_U(", ", mfcs, mfcs_bytes);
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PRINT_FIELD_U(", ", mfcs, mfcs_wrong_if);
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printf("}"));
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#endif
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#ifdef HAVE_STRUCT_RTVIA
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static const struct rtvia via = {
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.rtvia_family = AF_INET
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};
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TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_VIA, pattern, via,
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printf("{rtvia_family=AF_INET}"));
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static const char address4[] = "12.34.56.78";
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struct in_addr a4 = {
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.s_addr = inet_addr(address4)
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};
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char rtviabuf[sizeof(via) + sizeof(a4)];
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memcpy(rtviabuf, &via, sizeof(via));
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memcpy(rtviabuf + sizeof(via), &a4, sizeof(a4));
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TEST_NLATTR(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_VIA, sizeof(rtviabuf), rtviabuf, sizeof(rtviabuf),
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printf("{rtvia_family=AF_INET"
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", rtvia_addr=inet_addr(\"%s\")}", address4));
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#endif
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const uint16_t encap_type = LWTUNNEL_ENCAP_NONE;
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TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
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init_rtmsg, print_rtmsg,
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RTA_ENCAP_TYPE, pattern, encap_type,
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printf("LWTUNNEL_ENCAP_NONE"));
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puts("+++ exited with 0 +++");
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return 0;
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}
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