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// SPDX-License-Identifier: GPL-2.0
/* Copyright Amazon.com Inc. or its affiliates. */
#include <sys/socket.h>
#include <netinet/in.h>
#include "../kselftest_harness.h"
static const __u32 in4addr_any = INADDR_ANY;
static const __u32 in4addr_loopback = INADDR_LOOPBACK;
static const struct in6_addr in6addr_v4mapped_any = {
.s6_addr = {
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 255, 255,
0, 0, 0, 0
}
};
static const struct in6_addr in6addr_v4mapped_loopback = {
.s6_addr = {
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 255, 255,
127, 0, 0, 1
}
};
FIXTURE(bind_wildcard)
{
socklen_t addrlen[2];
union {
struct sockaddr addr;
struct sockaddr_in addr4;
struct sockaddr_in6 addr6;
} addr[2];
};
FIXTURE_VARIANT(bind_wildcard)
{
sa_family_t family[2];
const void *addr[2];
int expected_errno;
};
FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_any)
{
.family = {AF_INET, AF_INET6},
.addr = {&in4addr_any, &in6addr_any},
.expected_errno = EADDRINUSE,
};
FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_local)
{
.family = {AF_INET, AF_INET6},
.addr = {&in4addr_any, &in6addr_loopback},
.expected_errno = 0,
};
FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_v4mapped_any)
{
.family = {AF_INET, AF_INET6},
.addr = {&in4addr_any, &in6addr_v4mapped_any},
.expected_errno = EADDRINUSE,
};
FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_v4mapped_local)
{
.family = {AF_INET, AF_INET6},
.addr = {&in4addr_any, &in6addr_v4mapped_loopback},
.expected_errno = EADDRINUSE,
};
FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_any)
{
.family = {AF_INET, AF_INET6},
.addr = {&in4addr_loopback, &in6addr_any},
.expected_errno = EADDRINUSE,
};
FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_local)
{
.family = {AF_INET, AF_INET6},
.addr = {&in4addr_loopback, &in6addr_loopback},
.expected_errno = 0,
};
FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_v4mapped_any)
{
.family = {AF_INET, AF_INET6},
.addr = {&in4addr_loopback, &in6addr_v4mapped_any},
.expected_errno = EADDRINUSE,
};
FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_v4mapped_local)
{
.family = {AF_INET, AF_INET6},
.addr = {&in4addr_loopback, &in6addr_v4mapped_loopback},
.expected_errno = EADDRINUSE,
};
static void setup_addr(FIXTURE_DATA(bind_wildcard) *self, int i,
int family, const void *addr_const)
{
if (family == AF_INET) {
struct sockaddr_in *addr4 = &self->addr[i].addr4;
const __u32 *addr4_const = addr_const;
addr4->sin_family = AF_INET;
addr4->sin_port = htons(0);
addr4->sin_addr.s_addr = htonl(*addr4_const);
self->addrlen[i] = sizeof(struct sockaddr_in);
} else {
struct sockaddr_in6 *addr6 = &self->addr[i].addr6;
const struct in6_addr *addr6_const = addr_const;
addr6->sin6_family = AF_INET6;
addr6->sin6_port = htons(0);
addr6->sin6_addr = *addr6_const;
self->addrlen[i] = sizeof(struct sockaddr_in6);
}
}
FIXTURE_SETUP(bind_wildcard)
{
setup_addr(self, 0, variant->family[0], variant->addr[0]);
setup_addr(self, 1, variant->family[1], variant->addr[1]);
}
FIXTURE_TEARDOWN(bind_wildcard)
{
}
void 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)
{
int fd[2];
int ret;
fd[0] = socket(addr1->sa_family, SOCK_STREAM, 0);
ASSERT_GT(fd[0], 0);
ret = bind(fd[0], addr1, addrlen1);
ASSERT_EQ(ret, 0);
ret = getsockname(fd[0], addr1, &addrlen1);
ASSERT_EQ(ret, 0);
((struct sockaddr_in *)addr2)->sin_port = ((struct sockaddr_in *)addr1)->sin_port;
fd[1] = socket(addr2->sa_family, SOCK_STREAM, 0);
ASSERT_GT(fd[1], 0);
ret = bind(fd[1], addr2, addrlen2);
if (expected_errno) {
ASSERT_EQ(ret, -1);
ASSERT_EQ(errno, expected_errno);
} else {
ASSERT_EQ(ret, 0);
}
close(fd[1]);
close(fd[0]);
}
TEST_F(bind_wildcard, v4_v6)
{
bind_sockets(_metadata, self, variant->expected_errno,
&self->addr[0].addr, self->addrlen[0],
&self->addr[1].addr, self->addrlen[1]);
}
TEST_F(bind_wildcard, v6_v4)
{
bind_sockets(_metadata, self, variant->expected_errno,
&self->addr[1].addr, self->addrlen[1],
&self->addr[0].addr, self->addrlen[0]);
}
TEST_HARNESS_MAIN
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