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/*
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2017-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "test_nlattr.h"
#ifdef HAVE_LINUX_NEIGHBOUR_H
# include <linux/neighbour.h>
#endif
#include <linux/rtnetlink.h>
#define NDA_PORT 6
static void
init_ndmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
{
SET_STRUCT(struct nlmsghdr, nlh,
.nlmsg_len = msg_len,
.nlmsg_type = RTM_GETNEIGH,
.nlmsg_flags = NLM_F_DUMP
);
struct ndmsg *const msg = NLMSG_DATA(nlh);
SET_STRUCT(struct ndmsg, msg,
.ndm_family = AF_UNIX,
.ndm_ifindex = ifindex_lo(),
.ndm_state = NUD_PERMANENT,
.ndm_flags = NTF_PROXY,
.ndm_type = RTN_UNSPEC
);
}
static void
print_ndmsg(const unsigned int msg_len)
{
printf("{len=%u, type=RTM_GETNEIGH, flags=NLM_F_DUMP"
", seq=0, pid=0}, {ndm_family=AF_UNIX"
", ndm_ifindex=" IFINDEX_LO_STR
", ndm_state=NUD_PERMANENT"
", ndm_flags=NTF_PROXY"
", ndm_type=RTN_UNSPEC}",
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 ndmsg);
void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
NLA_HDRLEN + sizeof(struct nda_cacheinfo));
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 /* NDA_??? */", nla_type);
TEST_NLATTR_(fd, nlh0, hdrlen,
init_ndmsg, print_ndmsg,
nla_type, nla_type_str,
4, pattern, 4,
print_quoted_hex(pattern, 4));
TEST_NLATTR(fd, nlh0, hdrlen,
init_ndmsg, print_ndmsg,
NDA_DST, 4, pattern, 4,
print_quoted_hex(pattern, 4));
static const struct nda_cacheinfo ci = {
.ndm_confirmed = 0xabcdedad,
.ndm_used = 0xbcdaedad,
.ndm_updated = 0xcdbadeda,
.ndm_refcnt = 0xdeadbeda
};
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_ndmsg, print_ndmsg,
NDA_CACHEINFO, pattern, ci,
PRINT_FIELD_U("{", ci, ndm_confirmed);
PRINT_FIELD_U(", ", ci, ndm_used);
PRINT_FIELD_U(", ", ci, ndm_updated);
PRINT_FIELD_U(", ", ci, ndm_refcnt);
printf("}"));
const uint16_t port = 0xabcd;
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_ndmsg, print_ndmsg,
NDA_PORT, pattern, port,
printf("htons(%u)", ntohs(port)));
puts("+++ exited with 0 +++");
return 0;
}
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