1 /*
2  * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
3  * Copyright (c) 2017 The strace developers.
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #include "tests.h"
30 
31 #ifdef HAVE_LINUX_NETFILTER_XT_OSF_H
32 
33 # include <stdio.h>
34 # include <sys/socket.h>
35 # include "netlink.h"
36 # include <linux/ip.h>
37 # include <linux/tcp.h>
38 # include <linux/netfilter/nfnetlink.h>
39 # include <linux/netfilter/xt_osf.h>
40 
41 static void
test_nlmsg_type(const int fd)42 test_nlmsg_type(const int fd)
43 {
44 	long rc;
45 	struct nlmsghdr nlh = {
46 		.nlmsg_len = sizeof(nlh),
47 		.nlmsg_flags = NLM_F_REQUEST,
48 	};
49 
50 	nlh.nlmsg_type = NFNL_SUBSYS_OSF << 8 | OSF_MSG_ADD;
51 	rc = sendto(fd, &nlh, nlh.nlmsg_len, MSG_DONTWAIT, NULL, 0);
52 	printf("sendto(%d, {len=%u"
53 	       ", type=NFNL_SUBSYS_OSF<<8|OSF_MSG_ADD"
54 	       ", flags=NLM_F_REQUEST, seq=0, pid=0}"
55 	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
56 	       fd, nlh.nlmsg_len, nlh.nlmsg_len, sprintrc(rc));
57 
58 	nlh.nlmsg_type = NFNL_SUBSYS_OSF << 8 | 0xff;
59 	rc = sendto(fd, &nlh, nlh.nlmsg_len, MSG_DONTWAIT, NULL, 0);
60 	printf("sendto(%d, {len=%u"
61 	       ", type=NFNL_SUBSYS_OSF<<8|0xff /* OSF_MSG_??? */"
62 	       ", flags=NLM_F_REQUEST, seq=0, pid=0}"
63 	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
64 	       fd, nlh.nlmsg_len, nlh.nlmsg_len, sprintrc(rc));
65 }
66 
67 int
main(void)68 main(void)
69 {
70 	skip_if_unavailable("/proc/self/fd/");
71 
72 	int fd = create_nl_socket(NETLINK_NETFILTER);
73 
74 	test_nlmsg_type(fd);
75 
76 	puts("+++ exited with 0 +++");
77 
78 	return 0;
79 }
80 
81 #else
82 
83 SKIP_MAIN_UNDEFINED("HAVE_LINUX_NETFILTER_XT_OSF_H")
84 
85 #endif
86