1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright Amazon.com Inc. or its affiliates. */
3
4 #include <sys/socket.h>
5 #include <netinet/in.h>
6
7 #include "../kselftest_harness.h"
8
9 struct in6_addr in6addr_v4mapped_any = {
10 .s6_addr = {
11 0, 0, 0, 0,
12 0, 0, 0, 0,
13 0, 0, 255, 255,
14 0, 0, 0, 0
15 }
16 };
17
18 struct in6_addr in6addr_v4mapped_loopback = {
19 .s6_addr = {
20 0, 0, 0, 0,
21 0, 0, 0, 0,
22 0, 0, 255, 255,
23 127, 0, 0, 1
24 }
25 };
26
FIXTURE(bind_wildcard)27 FIXTURE(bind_wildcard)
28 {
29 struct sockaddr_in addr4;
30 struct sockaddr_in6 addr6;
31 };
32
FIXTURE_VARIANT(bind_wildcard)33 FIXTURE_VARIANT(bind_wildcard)
34 {
35 const __u32 addr4_const;
36 const struct in6_addr *addr6_const;
37 int expected_errno;
38 };
39
FIXTURE_VARIANT_ADD(bind_wildcard,v4_any_v6_any)40 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_any)
41 {
42 .addr4_const = INADDR_ANY,
43 .addr6_const = &in6addr_any,
44 .expected_errno = EADDRINUSE,
45 };
46
FIXTURE_VARIANT_ADD(bind_wildcard,v4_any_v6_local)47 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_local)
48 {
49 .addr4_const = INADDR_ANY,
50 .addr6_const = &in6addr_loopback,
51 .expected_errno = 0,
52 };
53
FIXTURE_VARIANT_ADD(bind_wildcard,v4_any_v6_v4mapped_any)54 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_v4mapped_any)
55 {
56 .addr4_const = INADDR_ANY,
57 .addr6_const = &in6addr_v4mapped_any,
58 .expected_errno = EADDRINUSE,
59 };
60
FIXTURE_VARIANT_ADD(bind_wildcard,v4_any_v6_v4mapped_local)61 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_v4mapped_local)
62 {
63 .addr4_const = INADDR_ANY,
64 .addr6_const = &in6addr_v4mapped_loopback,
65 .expected_errno = EADDRINUSE,
66 };
67
FIXTURE_VARIANT_ADD(bind_wildcard,v4_local_v6_any)68 FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_any)
69 {
70 .addr4_const = INADDR_LOOPBACK,
71 .addr6_const = &in6addr_any,
72 .expected_errno = EADDRINUSE,
73 };
74
FIXTURE_VARIANT_ADD(bind_wildcard,v4_local_v6_local)75 FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_local)
76 {
77 .addr4_const = INADDR_LOOPBACK,
78 .addr6_const = &in6addr_loopback,
79 .expected_errno = 0,
80 };
81
FIXTURE_VARIANT_ADD(bind_wildcard,v4_local_v6_v4mapped_any)82 FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_v4mapped_any)
83 {
84 .addr4_const = INADDR_LOOPBACK,
85 .addr6_const = &in6addr_v4mapped_any,
86 .expected_errno = EADDRINUSE,
87 };
88
FIXTURE_VARIANT_ADD(bind_wildcard,v4_local_v6_v4mapped_local)89 FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_v4mapped_local)
90 {
91 .addr4_const = INADDR_LOOPBACK,
92 .addr6_const = &in6addr_v4mapped_loopback,
93 .expected_errno = EADDRINUSE,
94 };
95
FIXTURE_SETUP(bind_wildcard)96 FIXTURE_SETUP(bind_wildcard)
97 {
98 self->addr4.sin_family = AF_INET;
99 self->addr4.sin_port = htons(0);
100 self->addr4.sin_addr.s_addr = htonl(variant->addr4_const);
101
102 self->addr6.sin6_family = AF_INET6;
103 self->addr6.sin6_port = htons(0);
104 self->addr6.sin6_addr = *variant->addr6_const;
105 }
106
FIXTURE_TEARDOWN(bind_wildcard)107 FIXTURE_TEARDOWN(bind_wildcard)
108 {
109 }
110
bind_sockets(struct __test_metadata * _metadata,FIXTURE_DATA (bind_wildcard)* self,int expected_errno,struct sockaddr * addr1,socklen_t addrlen1,struct sockaddr * addr2,socklen_t addrlen2)111 void bind_sockets(struct __test_metadata *_metadata,
112 FIXTURE_DATA(bind_wildcard) *self,
113 int expected_errno,
114 struct sockaddr *addr1, socklen_t addrlen1,
115 struct sockaddr *addr2, socklen_t addrlen2)
116 {
117 int fd[2];
118 int ret;
119
120 fd[0] = socket(addr1->sa_family, SOCK_STREAM, 0);
121 ASSERT_GT(fd[0], 0);
122
123 ret = bind(fd[0], addr1, addrlen1);
124 ASSERT_EQ(ret, 0);
125
126 ret = getsockname(fd[0], addr1, &addrlen1);
127 ASSERT_EQ(ret, 0);
128
129 ((struct sockaddr_in *)addr2)->sin_port = ((struct sockaddr_in *)addr1)->sin_port;
130
131 fd[1] = socket(addr2->sa_family, SOCK_STREAM, 0);
132 ASSERT_GT(fd[1], 0);
133
134 ret = bind(fd[1], addr2, addrlen2);
135 if (expected_errno) {
136 ASSERT_EQ(ret, -1);
137 ASSERT_EQ(errno, expected_errno);
138 } else {
139 ASSERT_EQ(ret, 0);
140 }
141
142 close(fd[1]);
143 close(fd[0]);
144 }
145
TEST_F(bind_wildcard,v4_v6)146 TEST_F(bind_wildcard, v4_v6)
147 {
148 bind_sockets(_metadata, self, variant->expected_errno,
149 (struct sockaddr *)&self->addr4, sizeof(self->addr4),
150 (struct sockaddr *)&self->addr6, sizeof(self->addr6));
151 }
152
TEST_F(bind_wildcard,v6_v4)153 TEST_F(bind_wildcard, v6_v4)
154 {
155 bind_sockets(_metadata, self, variant->expected_errno,
156 (struct sockaddr *)&self->addr6, sizeof(self->addr6),
157 (struct sockaddr *)&self->addr4, sizeof(self->addr4));
158 }
159
160 TEST_HARNESS_MAIN
161