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/*
* Copyright (c) 2017, 2018 Chen Jingpiao <chenjingpiao@gmail.com>
* Copyright (c) 2017-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include "test_netlink.h"
#include <linux/netfilter/nfnetlink.h>
#include <linux/netfilter/nf_tables.h>
static void
test_nlmsg_type(const int fd)
{
long rc;
struct nlmsghdr nlh = {
.nlmsg_len = sizeof(nlh),
.nlmsg_flags = NLM_F_REQUEST,
};
nlh.nlmsg_type = NFNL_MSG_BATCH_BEGIN;
rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
printf("sendto(%d, {nlmsg_len=%u, nlmsg_type=NFNL_MSG_BATCH_BEGIN"
", nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=0, nlmsg_pid=0}"
", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
nlh.nlmsg_type = NFNL_SUBSYS_CTNETLINK << 8 | 0xff;
rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
printf("sendto(%d, {nlmsg_len=%u"
", nlmsg_type=NFNL_SUBSYS_CTNETLINK<<8|0xff"
" /* IPCTNL_MSG_CT_??? */, nlmsg_flags=NLM_F_REQUEST"
", nlmsg_seq=0, nlmsg_pid=0}, %u, MSG_DONTWAIT, NULL, 0) = %s\n",
fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
nlh.nlmsg_type = 0xffff;
rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
printf("sendto(%d, {nlmsg_len=%u, nlmsg_type=0xff"
" /* NFNL_SUBSYS_??? */<<8|0xff, nlmsg_flags=NLM_F_REQUEST"
", nlmsg_seq=0, nlmsg_pid=0}, %u, MSG_DONTWAIT, NULL, 0) = %s\n",
fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
}
static void
test_nlmsg_done(const int fd)
{
const int num = 0xabcdefad;
void *const nlh0 = midtail_alloc(NLMSG_HDRLEN, sizeof(num));
TEST_NETLINK(fd, nlh0, NLMSG_DONE, NLM_F_REQUEST,
sizeof(num), &num, sizeof(num),
printf("%d", num));
}
static void
test_nfgenmsg(const int fd)
{
static const struct nlattr nla = {
.nla_len = sizeof(nla),
.nla_type = 0x0bcd
};
struct nfgenmsg msg = {
.nfgen_family = AF_UNIX,
.version = NFNETLINK_V0,
.res_id = NFNL_SUBSYS_NFTABLES
};
char str_buf[NLMSG_ALIGN(sizeof(msg)) + 4];
char nla_buf[NLMSG_ALIGN(sizeof(msg)) + sizeof(nla)];
void *const nlh0 = midtail_alloc(NLMSG_HDRLEN,
MAX(sizeof(str_buf), sizeof(nla_buf)));
TEST_NETLINK_OBJECT_EX_(fd, nlh0,
NFNL_SUBSYS_NFTABLES << 8 | NFT_MSG_NEWTABLE,
"NFNL_SUBSYS_NFTABLES<<8|NFT_MSG_NEWTABLE",
NLM_F_REQUEST, "NLM_F_REQUEST",
msg, print_quoted_hex,
printf("{nfgen_family=AF_UNIX");
printf(", version=NFNETLINK_V0");
printf(", res_id=");
if (htons(NFNL_SUBSYS_NFTABLES) == NFNL_SUBSYS_NFTABLES)
printf("htons(NFNL_SUBSYS_NFTABLES)");
else
printf("NFNL_SUBSYS_NFTABLES");
printf("}");
);
msg.res_id = htons(NFNL_SUBSYS_NFTABLES);
TEST_NETLINK_(fd, nlh0,
NFNL_SUBSYS_NFTABLES << 8 | NFT_MSG_NEWTABLE,
"NFNL_SUBSYS_NFTABLES<<8|NFT_MSG_NEWTABLE",
NLM_F_REQUEST, "NLM_F_REQUEST",
sizeof(msg), &msg, sizeof(msg),
printf("{nfgen_family=AF_UNIX");
printf(", version=NFNETLINK_V0");
printf(", res_id=htons(NFNL_SUBSYS_NFTABLES)}"));
msg.res_id = htons(0xabcd);
TEST_NETLINK_(fd, nlh0,
NFNL_SUBSYS_NFTABLES << 8 | NFT_MSG_NEWTABLE,
"NFNL_SUBSYS_NFTABLES<<8|NFT_MSG_NEWTABLE",
NLM_F_REQUEST, "NLM_F_REQUEST",
sizeof(msg), &msg, sizeof(msg),
printf("{nfgen_family=AF_UNIX");
printf(", version=NFNETLINK_V0");
printf(", res_id=htons(%d)}", 0xabcd));
msg.res_id = htons(NFNL_SUBSYS_NFTABLES);
TEST_NETLINK(fd, nlh0,
NFNL_MSG_BATCH_BEGIN, NLM_F_REQUEST,
sizeof(msg), &msg, sizeof(msg),
printf("{nfgen_family=AF_UNIX");
printf(", version=NFNETLINK_V0");
printf(", res_id=htons(%d)}", NFNL_SUBSYS_NFTABLES));
msg.res_id = htons(0xabcd);
memcpy(str_buf, &msg, sizeof(msg));
memcpy(str_buf + NLMSG_ALIGN(sizeof(msg)), "1234", 4);
TEST_NETLINK(fd, nlh0,
NFNL_MSG_BATCH_BEGIN, NLM_F_REQUEST,
sizeof(str_buf), str_buf, sizeof(str_buf),
printf("{nfgen_family=AF_UNIX");
printf(", version=NFNETLINK_V0");
printf(", res_id=htons(%d)}"
", \"\\x31\\x32\\x33\\x34\"", 0xabcd));
msg.res_id = htons(NFNL_SUBSYS_NFTABLES);
memcpy(nla_buf, &msg, sizeof(msg));
memcpy(nla_buf + NLMSG_ALIGN(sizeof(msg)), &nla, sizeof(nla));
TEST_NETLINK_(fd, nlh0,
NFNL_SUBSYS_NFTABLES << 8 | 0xff,
"NFNL_SUBSYS_NFTABLES<<8|0xff /* NFT_MSG_??? */",
NLM_F_REQUEST, "NLM_F_REQUEST",
sizeof(nla_buf), nla_buf, sizeof(nla_buf),
printf("{nfgen_family=AF_UNIX");
printf(", version=NFNETLINK_V0");
printf(", res_id=htons(NFNL_SUBSYS_NFTABLES)}"
", {nla_len=%d, nla_type=%#x}",
nla.nla_len, nla.nla_type));
}
int main(void)
{
skip_if_unavailable("/proc/self/fd/");
int fd = create_nl_socket(NETLINK_NETFILTER);
test_nlmsg_type(fd);
test_nlmsg_done(fd);
test_nfgenmsg(fd);
printf("+++ exited with 0 +++\n");
return 0;
}
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