1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*
* 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"
#ifdef HAVE_LINUX_FIB_RULES_H
# include <stdio.h>
# include <inttypes.h>
# include "test_nlattr.h"
# include <linux/fib_rules.h>
# include <linux/in.h>
# include <linux/ip.h>
# include <linux/rtnetlink.h>
# define FRA_TUN_ID 12
# define FRA_TABLE 15
# define FRA_UID_RANGE 20
# define FRA_PROTOCOL 21
# define FRA_IP_PROTO 22
# define FRA_SPORT_RANGE 23
# define FRA_DPORT_RANGE 24
# ifndef HAVE_STRUCT_FIB_RULE_PORT_RANGE
struct fib_rule_port_range {
uint16_t start;
uint16_t end;
};
# endif /* HAVE_STRUCT_FIB_RULE_PORT_RANGE */
static void
init_rtmsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
{
SET_STRUCT(struct nlmsghdr, nlh,
.nlmsg_len = msg_len,
.nlmsg_type = RTM_GETRULE,
.nlmsg_flags = NLM_F_DUMP
);
struct rtmsg *const msg = NLMSG_DATA(nlh);
SET_STRUCT(struct rtmsg, msg,
.rtm_family = AF_UNIX,
.rtm_tos = IPTOS_LOWDELAY,
.rtm_table = RT_TABLE_UNSPEC,
.rtm_type = FR_ACT_TO_TBL,
.rtm_flags = FIB_RULE_INVERT
);
}
static void
print_rtmsg(const unsigned int msg_len)
{
printf("{len=%u, type=RTM_GETRULE, flags=NLM_F_DUMP"
", seq=0, pid=0}, {family=AF_UNIX"
", dst_len=0, src_len=0"
", tos=IPTOS_LOWDELAY"
", table=RT_TABLE_UNSPEC"
", action=FR_ACT_TO_TBL"
", flags=FIB_RULE_INVERT}",
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 rtmsg);
void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen), NLA_HDRLEN + 8);
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 /* FRA_??? */", nla_type);
TEST_NLATTR_(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
nla_type, nla_type_str,
4, pattern, 4,
print_quoted_hex(pattern, 4));
TEST_NLATTR(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
FRA_DST, 4, pattern, 4,
print_quoted_hex(pattern, 4));
const uint32_t table_id = RT_TABLE_DEFAULT;
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
FRA_TABLE, pattern, table_id,
printf("RT_TABLE_DEFAULT"));
# ifdef HAVE_STRUCT_FIB_RULE_UID_RANGE
static const struct fib_rule_uid_range range = {
.start = 0xabcdedad,
.end = 0xbcdeadba
};
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
FRA_UID_RANGE, pattern, range,
PRINT_FIELD_U("{", range, start);
PRINT_FIELD_U(", ", range, end);
printf("}"));
# endif
# if defined HAVE_BE64TOH || defined be64toh
const uint64_t tun_id = 0xabcdcdbeedabadef;
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
FRA_TUN_ID, pattern, tun_id,
printf("htobe64(%" PRIu64 ")", be64toh(tun_id)));
# endif
uint8_t proto;
static const struct {
uint8_t arg;
const char *str;
} proto_args[] = {
{ ARG_STR(RTPROT_UNSPEC) },
{ 5, "0x5 /* RTPROT_??? */" },
{ 17, "RTPROT_MROUTED" },
{ 42, "RTPROT_BABEL" },
{ 43, "0x2b /* RTPROT_??? */" },
{ ARG_STR(0xde) " /* RTPROT_??? */" },
};
for (unsigned i = 0; i < ARRAY_SIZE(proto_args); i++) {
proto = proto_args[i].arg;
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
FRA_PROTOCOL, pattern, proto,
printf("%s", proto_args[i].str));
}
static const struct {
uint8_t arg;
const char *str;
} ipproto_args[] = {
{ ARG_STR(IPPROTO_TCP) },
{ 254, "0xfe /* IPPROTO_??? */" },
{ ARG_STR(IPPROTO_RAW) },
};
for (unsigned i = 0; i < ARRAY_SIZE(ipproto_args); i++) {
proto = ipproto_args[i].arg;
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
FRA_IP_PROTO, pattern, proto,
printf("%s", ipproto_args[i].str));
}
static const struct fib_rule_port_range prange = {
.start = 0xabcd,
.end = 0xfeed,
};
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
FRA_SPORT_RANGE, pattern, prange,
PRINT_FIELD_U("{", prange, start);
PRINT_FIELD_U(", ", prange, end);
printf("}"));
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_rtmsg, print_rtmsg,
FRA_DPORT_RANGE, pattern, prange,
PRINT_FIELD_U("{", prange, start);
PRINT_FIELD_U(", ", prange, end);
printf("}"));
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("HAVE_LINUX_FIB_RULES_H")
#endif
|
