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#include <stdio.h>
32#include <arpa/inet.h>
33#include "test_nlattr.h"
34#ifdef HAVE_LINUX_IF_ADDR_H
35# include <linux/if_addr.h>
36#endif
37#include <linux/rtnetlink.h>
38
39#define IFA_FLAGS 8
40
41#define SET_IFA_FAMILY(af)		\
42	do {				\
43		ifa_family = af;	\
44		ifa_family_str = #af;	\
45	}				\
46	while (0)
47
48uint8_t ifa_family;
49const char *ifa_family_str;
50
51static void
52init_ifaddrmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
53{
54	SET_STRUCT(struct nlmsghdr, nlh,
55		.nlmsg_len = msg_len,
56		.nlmsg_type = RTM_GETADDR,
57		.nlmsg_flags = NLM_F_DUMP
58	);
59
60	struct ifaddrmsg *const msg = NLMSG_DATA(nlh);
61	SET_STRUCT(struct ifaddrmsg, msg,
62		.ifa_family = ifa_family,
63		.ifa_flags = IFA_F_SECONDARY,
64		.ifa_scope = RT_SCOPE_UNIVERSE,
65		.ifa_index = ifindex_lo()
66	);
67}
68
69static void
70print_ifaddrmsg(const unsigned int msg_len)
71{
72	printf("{len=%u, type=RTM_GETADDR, flags=NLM_F_DUMP"
73	       ", seq=0, pid=0}, {ifa_family=%s"
74	       ", ifa_prefixlen=0"
75	       ", ifa_flags=IFA_F_SECONDARY"
76	       ", ifa_scope=RT_SCOPE_UNIVERSE"
77	       ", ifa_index=" IFINDEX_LO_STR "}",
78	       msg_len, ifa_family_str);
79}
80
81int
82main(void)
83{
84	skip_if_unavailable("/proc/self/fd/");
85
86	const int fd = create_nl_socket(NETLINK_ROUTE);
87	const unsigned int hdrlen = sizeof(struct ifaddrmsg);
88	void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
89
90	static char pattern[4096];
91	fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
92
93	SET_IFA_FAMILY(AF_UNSPEC);
94	const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
95	char nla_type_str[256];
96	sprintf(nla_type_str, "%#x /* IFA_??? */", nla_type);
97	TEST_NLATTR_(fd, nlh0, hdrlen,
98		     init_ifaddrmsg, print_ifaddrmsg,
99		     nla_type, nla_type_str,
100		     4, pattern, 4,
101		     print_quoted_hex(pattern, 4));
102
103	TEST_NLATTR(fd, nlh0, hdrlen,
104		    init_ifaddrmsg, print_ifaddrmsg,
105		    IFA_ADDRESS, 4, pattern, 4,
106		    print_quoted_hex(pattern, 4));
107
108	SET_IFA_FAMILY(AF_INET);
109	static const char address4[] = "12.34.56.78";
110	struct in_addr a4;
111
112	if (!inet_pton(AF_INET, address4, &a4))
113		perror_msg_and_skip("inet_pton");
114
115	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
116			   init_ifaddrmsg, print_ifaddrmsg,
117			   IFA_ADDRESS, pattern, a4,
118			   printf("%s", address4));
119
120	SET_IFA_FAMILY(AF_INET6);
121	static const char address6[] = "12:34:56:78:90:ab:cd:ef";
122	struct in6_addr a6;
123
124	if (!inet_pton(AF_INET6, address6, &a6))
125		perror_msg_and_skip("inet_pton");
126
127	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
128			   init_ifaddrmsg, print_ifaddrmsg,
129			   IFA_ADDRESS, pattern, a6,
130			   printf("%s", address6));
131
132	static const struct ifa_cacheinfo ci = {
133		.ifa_prefered = 0xabcdefac,
134		.ifa_valid = 0xbcdadbca,
135		.cstamp = 0xcdabedba,
136		.tstamp = 0xdebabdac
137	};
138	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
139			   init_ifaddrmsg, print_ifaddrmsg,
140			   IFA_CACHEINFO, pattern, ci,
141			   PRINT_FIELD_U("{", ci, ifa_prefered);
142			   PRINT_FIELD_U(", ", ci, ifa_valid);
143			   PRINT_FIELD_U(", ", ci, cstamp);
144			   PRINT_FIELD_U(", ", ci, tstamp);
145			   printf("}"));
146
147	const uint32_t ifa_flags = IFA_F_SECONDARY | IFA_F_PERMANENT;
148	TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
149			   init_ifaddrmsg, print_ifaddrmsg,
150			   IFA_FLAGS, pattern, ifa_flags,
151			   printf("IFA_F_SECONDARY|IFA_F_PERMANENT"));
152
153	puts("+++ exited with 0 +++");
154	return 0;
155}
156