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/* Tests for __inet6_scopeid_pton and IPv6 scopes in getaddrinfo.
Copyright (C) 2016-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <arpa/inet.h>
#include <inttypes.h>
#include <net-internal.h>
#include <net/if.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <support/check.h>
#include <support/support.h>
#include <support/test-driver.h>
/* An interface which is known to the system. */
static const char *interface_name;
static uint32_t interface_index;
/* Initiale the variables above. */
static void
setup_interface (void)
{
struct if_nameindex *list = if_nameindex ();
if (list != NULL && list[0].if_index != 0 && list[0].if_name[0] != '\0')
{
interface_name = list[0].if_name;
interface_index = list[0].if_index;
}
}
/* Convert ADDRESS to struct in6_addr. */
static struct in6_addr
from_string (const char *address)
{
struct in6_addr addr;
if (inet_pton (AF_INET6, address, &addr) != 1)
FAIL_EXIT1 ("inet_pton (\"%s\")", address);
return addr;
}
/* Invoke getaddrinfo to parse ADDRESS%SCOPE. Return true if
getaddrinfo was successful. */
static bool
call_gai (int family, const char *address, const char *scope,
struct sockaddr_in6 *result)
{
struct addrinfo hints =
{
.ai_family = family,
.ai_flags = AI_NUMERICHOST,
.ai_socktype = SOCK_DGRAM,
.ai_protocol = IPPROTO_UDP,
};
char *fulladdr = xasprintf ("%s%%%s", address, scope);
struct addrinfo *ai = NULL;
int ret = getaddrinfo (fulladdr, NULL, &hints, &ai);
if (ret == EAI_ADDRFAMILY || ret == EAI_NONAME)
{
if (test_verbose > 0)
printf ("info: getaddrinfo (\"%s\"): %s (%d)\n",
fulladdr, gai_strerror (ret), ret);
free (fulladdr);
return false;
}
if (ret != 0)
FAIL_EXIT1 ("getaddrinfo (\"%s\"): %s (%d)\n",
fulladdr, gai_strerror (ret), ret);
TEST_VERIFY_EXIT (ai != NULL);
TEST_VERIFY_EXIT (ai->ai_addrlen == sizeof (*result));
TEST_VERIFY (ai->ai_family == AF_INET6);
TEST_VERIFY (ai->ai_next == NULL);
memcpy (result, ai->ai_addr, sizeof (*result));
free (fulladdr);
freeaddrinfo (ai);
return true;
}
/* Verify that a successful call to getaddrinfo returned the expected
scope data. */
static void
check_ai (const char *what, const char *addr_string, const char *scope_string,
const struct sockaddr_in6 *sa,
const struct in6_addr *addr, uint32_t scope)
{
if (memcmp (addr, &sa->sin6_addr, sizeof (*addr)) != 0)
{
support_record_failure ();
printf ("error: getaddrinfo %s address mismatch for %s%%%s\n",
what, addr_string, scope_string);
}
if (sa->sin6_scope_id != scope)
{
support_record_failure ();
printf ("error: getaddrinfo %s scope mismatch for %s%%%s\n"
" expected: %" PRIu32 "\n"
" actual: %" PRIu32 "\n",
what, addr_string, scope_string, scope, sa->sin6_scope_id);
}
}
/* Check a single address were we expected a failure. */
static void
expect_failure (const char *address, const char *scope)
{
if (test_verbose > 0)
printf ("info: expecting failure for %s%%%s\n", address, scope);
struct in6_addr addr = from_string (address);
uint32_t result = 1234;
if (__inet6_scopeid_pton (&addr, scope, &result) == 0)
{
support_record_failure ();
printf ("error: unexpected success for %s%%%s\n",
address, scope);
}
if (result != 1234)
{
support_record_failure ();
printf ("error: unexpected result update for %s%%%s\n",
address, scope);
}
struct sockaddr_in6 sa;
if (call_gai (AF_UNSPEC, address, scope, &sa))
{
support_record_failure ();
printf ("error: unexpected getaddrinfo success for %s%%%s (AF_UNSPEC)\n",
address, scope);
}
if (call_gai (AF_INET6, address, scope, &sa))
{
support_record_failure ();
printf ("error: unexpected getaddrinfo success for %s%%%s (AF_INET6)\n",
address, scope);
}
}
/* Check a single address were we expected a success. */
static void
expect_success (const char *address, const char *scope, uint32_t expected)
{
if (test_verbose > 0)
printf ("info: expecting success for %s%%%s\n", address, scope);
struct in6_addr addr = from_string (address);
uint32_t actual = expected + 1;
if (__inet6_scopeid_pton (&addr, scope, &actual) != 0)
{
support_record_failure ();
printf ("error: unexpected failure for %s%%%s\n",
address, scope);
}
if (actual != expected)
{
support_record_failure ();
printf ("error: unexpected result for for %s%%%s\n",
address, scope);
printf (" expected: %" PRIu32 "\n", expected);
printf (" actual: %" PRIu32 "\n", actual);
}
struct sockaddr_in6 sa;
memset (&sa, 0xc0, sizeof (sa));
if (call_gai (AF_UNSPEC, address, scope, &sa))
check_ai ("AF_UNSPEC", address, scope, &sa, &addr, expected);
else
{
support_record_failure ();
printf ("error: unexpected getaddrinfo failure for %s%%%s (AF_UNSPEC)\n",
address, scope);
}
memset (&sa, 0xc0, sizeof (sa));
if (call_gai (AF_INET6, address, scope, &sa))
check_ai ("AF_INET6", address, scope, &sa, &addr, expected);
else
{
support_record_failure ();
printf ("error: unexpected getaddrinfo failure for %s%%%s (AF_INET6)\n",
address, scope);
}
}
static int
do_test (void)
{
setup_interface ();
static const char *test_addresses[]
= { "::", "::1", "2001:db8::1", NULL };
for (int i = 0; test_addresses[i] != NULL; ++i)
{
expect_success (test_addresses[i], "0", 0);
expect_success (test_addresses[i], "5555", 5555);
expect_failure (test_addresses[i], "");
expect_failure (test_addresses[i], "-1");
expect_failure (test_addresses[i], "-99");
expect_failure (test_addresses[i], "037777777777");
expect_failure (test_addresses[i], "0x");
expect_failure (test_addresses[i], "0x1");
}
if (interface_name != NULL)
{
expect_success ("fe80::1", interface_name, interface_index);
expect_success ("ff02::1", interface_name, interface_index);
expect_success ("ff01::1", interface_name, interface_index);
expect_failure ("::", interface_name);
expect_failure ("::1", interface_name);
expect_failure ("2001:db8::1", interface_name);
}
return 0;
}
#include <support/test-driver.c>
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