mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 04:31:03 +00:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
504 lines
18 KiB
C
504 lines
18 KiB
C
/* Test basic nss_dns functionality and the resolver test harness itself.
|
|
Copyright (C) 2016-2019 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <support/check.h>
|
|
#include <support/check_nss.h>
|
|
#include <support/format_nss.h>
|
|
#include <support/resolv_test.h>
|
|
#include <support/support.h>
|
|
|
|
#define LONG_NAME \
|
|
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaax." \
|
|
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay." \
|
|
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaz." \
|
|
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat"
|
|
|
|
static void
|
|
response (const struct resolv_response_context *ctx,
|
|
struct resolv_response_builder *b,
|
|
const char *qname, uint16_t qclass, uint16_t qtype)
|
|
{
|
|
TEST_VERIFY_EXIT (qname != NULL);
|
|
|
|
/* The "t." prefix can be used to request TCP fallback. */
|
|
bool force_tcp;
|
|
if (strncmp ("t.", qname, 2) == 0)
|
|
force_tcp = true;
|
|
else
|
|
force_tcp = false;
|
|
const char *qname_compare;
|
|
if (force_tcp)
|
|
qname_compare = qname + 2;
|
|
else
|
|
qname_compare = qname;
|
|
enum {www, alias, nxdomain, long_name, nodata} requested_qname;
|
|
if (strcmp (qname_compare, "www.example") == 0)
|
|
requested_qname = www;
|
|
else if (strcmp (qname_compare, "alias.example") == 0)
|
|
requested_qname = alias;
|
|
else if (strcmp (qname_compare, "nxdomain.example") == 0)
|
|
requested_qname = nxdomain;
|
|
else if (strcmp (qname_compare, LONG_NAME) == 0)
|
|
requested_qname = long_name;
|
|
else if (strcmp (qname_compare, "nodata.example") == 0)
|
|
requested_qname = nodata;
|
|
else
|
|
{
|
|
support_record_failure ();
|
|
printf ("error: unexpected QNAME: %s\n", qname);
|
|
return;
|
|
}
|
|
TEST_VERIFY_EXIT (qclass == C_IN);
|
|
struct resolv_response_flags flags = {.tc = force_tcp && !ctx->tcp};
|
|
if (requested_qname == nxdomain)
|
|
flags.rcode = 3; /* NXDOMAIN */
|
|
resolv_response_init (b, flags);
|
|
resolv_response_add_question (b, qname, qclass, qtype);
|
|
if (requested_qname == nxdomain || flags.tc)
|
|
return;
|
|
|
|
resolv_response_section (b, ns_s_an);
|
|
switch (requested_qname)
|
|
{
|
|
case www:
|
|
case long_name:
|
|
resolv_response_open_record (b, qname, qclass, qtype, 0);
|
|
break;
|
|
case alias:
|
|
resolv_response_open_record (b, qname, qclass, T_CNAME, 0);
|
|
resolv_response_add_name (b, "www.example");
|
|
resolv_response_close_record (b);
|
|
resolv_response_open_record (b, "www.example", qclass, qtype, 0);
|
|
break;
|
|
case nodata:
|
|
return;
|
|
case nxdomain:
|
|
FAIL_EXIT1 ("unreachable");
|
|
}
|
|
switch (qtype)
|
|
{
|
|
case T_A:
|
|
{
|
|
char ipv4[4] = {192, 0, 2, 17};
|
|
ipv4[3] += requested_qname + 2 * ctx->tcp + 4 * ctx->server_index;
|
|
resolv_response_add_data (b, &ipv4, sizeof (ipv4));
|
|
}
|
|
break;
|
|
case T_AAAA:
|
|
{
|
|
char ipv6[16]
|
|
= {0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
|
|
ipv6[15] += requested_qname + 2 * ctx->tcp + 4 * ctx->server_index;
|
|
resolv_response_add_data (b, &ipv6, sizeof (ipv6));
|
|
}
|
|
break;
|
|
default:
|
|
support_record_failure ();
|
|
printf ("error: unexpected QTYPE: %s/%u/%u\n",
|
|
qname, qclass, qtype);
|
|
}
|
|
resolv_response_close_record (b);
|
|
}
|
|
|
|
static void
|
|
check_h (const char *name, int family, const char *expected)
|
|
{
|
|
if (family == AF_INET)
|
|
{
|
|
char *query = xasprintf ("gethostbyname (\"%s\")", name);
|
|
check_hostent (query, gethostbyname (name), expected);
|
|
free (query);
|
|
}
|
|
{
|
|
char *query = xasprintf ("gethostbyname2 (\"%s\", %d)", name, family);
|
|
check_hostent (query, gethostbyname2 (name, family), expected);
|
|
free (query);
|
|
}
|
|
|
|
bool too_small = true;
|
|
for (unsigned int offset = 0; offset < 8; ++offset)
|
|
for (unsigned int size = 1; too_small; ++size)
|
|
{
|
|
char *buf = xmalloc (offset + size);
|
|
too_small = false;
|
|
|
|
struct hostent hostbuf;
|
|
struct hostent *result;
|
|
int herror;
|
|
if (family == AF_INET)
|
|
{
|
|
char *query = xasprintf ("gethostbyname (\"%s\") %u/%u",
|
|
name, offset, size);
|
|
int ret = gethostbyname_r
|
|
(name, &hostbuf, buf + offset, size, &result, &herror);
|
|
if (ret == 0)
|
|
{
|
|
h_errno = herror;
|
|
check_hostent (query, result, expected);
|
|
}
|
|
else if (ret == ERANGE)
|
|
too_small = true;
|
|
else
|
|
{
|
|
errno = ret;
|
|
FAIL_EXIT1 ("gethostbyname_r: %m");
|
|
}
|
|
free (query);
|
|
memset (buf, 0, offset + size);
|
|
}
|
|
char *query = xasprintf ("gethostbyname2 (\"%s\", %d) %u/%u",
|
|
name, family, offset, size);
|
|
int ret = gethostbyname2_r
|
|
(name, family, &hostbuf, buf + offset, size, &result, &herror);
|
|
if (ret == 0)
|
|
{
|
|
h_errno = herror;
|
|
check_hostent (query, result, expected);
|
|
}
|
|
else if (ret == ERANGE)
|
|
too_small = true;
|
|
else
|
|
{
|
|
errno = ret;
|
|
FAIL_EXIT1 ("gethostbyname_r: %m");
|
|
}
|
|
free (buf);
|
|
free (query);
|
|
}
|
|
}
|
|
|
|
static void
|
|
check_ai_hints (const char *name, const char *service,
|
|
struct addrinfo hints, const char *expected)
|
|
{
|
|
struct addrinfo *ai;
|
|
char *query = xasprintf ("%s:%s [%d]/0x%x", name, service,
|
|
hints.ai_family, hints.ai_flags);
|
|
int ret = getaddrinfo (name, service, &hints, &ai);
|
|
check_addrinfo (query, ai, ret, expected);
|
|
if (ret == 0)
|
|
freeaddrinfo (ai);
|
|
free (query);
|
|
}
|
|
|
|
static void
|
|
check_ai (const char *name, const char *service,
|
|
int family, const char *expected)
|
|
{
|
|
return check_ai_hints (name, service,
|
|
(struct addrinfo) { .ai_family = family, },
|
|
expected);
|
|
}
|
|
|
|
/* Test for bug 21295: getaddrinfo used to discard address information
|
|
instead of merging it. */
|
|
static void
|
|
test_bug_21295 (void)
|
|
{
|
|
/* The address order is unpredictable. There are two factors which
|
|
contribute to that: The stub resolver does not perform proper
|
|
response matching for A/AAAA queries (an A response could be
|
|
associated with an AAAA query and vice versa), and without
|
|
namespaces, system configuration could affect address
|
|
ordering. */
|
|
for (int do_tcp = 0; do_tcp < 2; ++do_tcp)
|
|
{
|
|
const struct addrinfo hints =
|
|
{
|
|
.ai_family = AF_INET6,
|
|
.ai_socktype = SOCK_STREAM,
|
|
.ai_flags = AI_V4MAPPED | AI_ALL,
|
|
};
|
|
const char *qname;
|
|
if (do_tcp)
|
|
qname = "t.www.example";
|
|
else
|
|
qname = "www.example";
|
|
struct addrinfo *ai = NULL;
|
|
int ret = getaddrinfo (qname, "80", &hints, &ai);
|
|
TEST_VERIFY_EXIT (ret == 0);
|
|
|
|
const char *expected_a;
|
|
const char *expected_b;
|
|
if (do_tcp)
|
|
{
|
|
expected_a = "flags: AI_V4MAPPED AI_ALL\n"
|
|
"address: STREAM/TCP 2001:db8::3 80\n"
|
|
"address: STREAM/TCP ::ffff:192.0.2.19 80\n";
|
|
expected_b = "flags: AI_V4MAPPED AI_ALL\n"
|
|
"address: STREAM/TCP ::ffff:192.0.2.19 80\n"
|
|
"address: STREAM/TCP 2001:db8::3 80\n";
|
|
}
|
|
else
|
|
{
|
|
expected_a = "flags: AI_V4MAPPED AI_ALL\n"
|
|
"address: STREAM/TCP 2001:db8::1 80\n"
|
|
"address: STREAM/TCP ::ffff:192.0.2.17 80\n";
|
|
expected_b = "flags: AI_V4MAPPED AI_ALL\n"
|
|
"address: STREAM/TCP ::ffff:192.0.2.17 80\n"
|
|
"address: STREAM/TCP 2001:db8::1 80\n";
|
|
}
|
|
|
|
char *actual = support_format_addrinfo (ai, ret);
|
|
if (!(strcmp (actual, expected_a) == 0
|
|
|| strcmp (actual, expected_b) == 0))
|
|
{
|
|
support_record_failure ();
|
|
printf ("error: %s: unexpected response (TCP: %d):\n%s\n",
|
|
__func__, do_tcp, actual);
|
|
}
|
|
free (actual);
|
|
freeaddrinfo (ai);
|
|
}
|
|
}
|
|
|
|
/* Run tests which do not expect any data. */
|
|
static void
|
|
test_nodata_nxdomain (void)
|
|
{
|
|
/* Iterate through different address families. */
|
|
int families[] = { AF_UNSPEC, AF_INET, AF_INET6, -1 };
|
|
for (int i = 0; families[i] >= 0; ++i)
|
|
/* If do_tcp, prepend "t." to the name to trigger TCP
|
|
fallback. */
|
|
for (int do_tcp = 0; do_tcp < 2; ++do_tcp)
|
|
/* If do_nxdomain, trigger an NXDOMAIN error (DNS failure),
|
|
otherwise use a NODATA response (empty but successful
|
|
answer). */
|
|
for (int do_nxdomain = 0; do_nxdomain < 2; ++do_nxdomain)
|
|
{
|
|
int family = families[i];
|
|
char *name = xasprintf ("%s%s.example",
|
|
do_tcp ? "t." : "",
|
|
do_nxdomain ? "nxdomain" : "nodata");
|
|
|
|
if (family != AF_UNSPEC)
|
|
{
|
|
if (do_nxdomain)
|
|
check_h (name, family, "error: HOST_NOT_FOUND\n");
|
|
else
|
|
check_h (name, family, "error: NO_ADDRESS\n");
|
|
}
|
|
|
|
const char *expected;
|
|
if (do_nxdomain)
|
|
expected = "error: Name or service not known\n";
|
|
else
|
|
expected = "error: No address associated with hostname\n";
|
|
|
|
check_ai (name, "80", family, expected);
|
|
|
|
struct addrinfo hints =
|
|
{
|
|
.ai_family = family,
|
|
.ai_flags = AI_V4MAPPED | AI_ALL,
|
|
};
|
|
check_ai_hints (name, "80", hints, expected);
|
|
hints.ai_flags |= AI_CANONNAME;
|
|
check_ai_hints (name, "80", hints, expected);
|
|
|
|
free (name);
|
|
}
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
struct resolv_test *aux = resolv_test_start
|
|
((struct resolv_redirect_config)
|
|
{
|
|
.response_callback = response,
|
|
});
|
|
|
|
check_h ("www.example", AF_INET,
|
|
"name: www.example\n"
|
|
"address: 192.0.2.17\n");
|
|
check_h ("alias.example", AF_INET,
|
|
"name: www.example\n"
|
|
"alias: alias.example\n"
|
|
"address: 192.0.2.18\n");
|
|
check_h ("www.example", AF_INET6,
|
|
"name: www.example\n"
|
|
"address: 2001:db8::1\n");
|
|
check_h ("alias.example", AF_INET6,
|
|
"name: www.example\n"
|
|
"alias: alias.example\n"
|
|
"address: 2001:db8::2\n");
|
|
check_h (LONG_NAME, AF_INET,
|
|
"name: " LONG_NAME "\n"
|
|
"address: 192.0.2.20\n");
|
|
|
|
check_ai ("www.example", "80", AF_UNSPEC,
|
|
"address: STREAM/TCP 192.0.2.17 80\n"
|
|
"address: DGRAM/UDP 192.0.2.17 80\n"
|
|
"address: RAW/IP 192.0.2.17 80\n"
|
|
"address: STREAM/TCP 2001:db8::1 80\n"
|
|
"address: DGRAM/UDP 2001:db8::1 80\n"
|
|
"address: RAW/IP 2001:db8::1 80\n");
|
|
check_ai_hints ("www.example", "80",
|
|
(struct addrinfo) { .ai_family = AF_UNSPEC,
|
|
.ai_flags = AI_CANONNAME, },
|
|
"flags: AI_CANONNAME\n"
|
|
"canonname: www.example\n"
|
|
"address: STREAM/TCP 192.0.2.17 80\n"
|
|
"address: DGRAM/UDP 192.0.2.17 80\n"
|
|
"address: RAW/IP 192.0.2.17 80\n"
|
|
"address: STREAM/TCP 2001:db8::1 80\n"
|
|
"address: DGRAM/UDP 2001:db8::1 80\n"
|
|
"address: RAW/IP 2001:db8::1 80\n");
|
|
check_ai ("alias.example", "80", AF_UNSPEC,
|
|
"address: STREAM/TCP 192.0.2.18 80\n"
|
|
"address: DGRAM/UDP 192.0.2.18 80\n"
|
|
"address: RAW/IP 192.0.2.18 80\n"
|
|
"address: STREAM/TCP 2001:db8::2 80\n"
|
|
"address: DGRAM/UDP 2001:db8::2 80\n"
|
|
"address: RAW/IP 2001:db8::2 80\n");
|
|
check_ai_hints ("alias.example", "80",
|
|
(struct addrinfo) { .ai_family = AF_UNSPEC,
|
|
.ai_flags = AI_CANONNAME, },
|
|
"flags: AI_CANONNAME\n"
|
|
"canonname: www.example\n"
|
|
"address: STREAM/TCP 192.0.2.18 80\n"
|
|
"address: DGRAM/UDP 192.0.2.18 80\n"
|
|
"address: RAW/IP 192.0.2.18 80\n"
|
|
"address: STREAM/TCP 2001:db8::2 80\n"
|
|
"address: DGRAM/UDP 2001:db8::2 80\n"
|
|
"address: RAW/IP 2001:db8::2 80\n");
|
|
check_ai (LONG_NAME, "80", AF_UNSPEC,
|
|
"address: STREAM/TCP 192.0.2.20 80\n"
|
|
"address: DGRAM/UDP 192.0.2.20 80\n"
|
|
"address: RAW/IP 192.0.2.20 80\n"
|
|
"address: STREAM/TCP 2001:db8::4 80\n"
|
|
"address: DGRAM/UDP 2001:db8::4 80\n"
|
|
"address: RAW/IP 2001:db8::4 80\n");
|
|
check_ai ("www.example", "80", AF_INET,
|
|
"address: STREAM/TCP 192.0.2.17 80\n"
|
|
"address: DGRAM/UDP 192.0.2.17 80\n"
|
|
"address: RAW/IP 192.0.2.17 80\n");
|
|
check_ai_hints ("www.example", "80",
|
|
(struct addrinfo) { .ai_family = AF_INET,
|
|
.ai_flags = AI_CANONNAME, },
|
|
"flags: AI_CANONNAME\n"
|
|
"canonname: www.example\n"
|
|
"address: STREAM/TCP 192.0.2.17 80\n"
|
|
"address: DGRAM/UDP 192.0.2.17 80\n"
|
|
"address: RAW/IP 192.0.2.17 80\n");
|
|
check_ai ("alias.example", "80", AF_INET,
|
|
"address: STREAM/TCP 192.0.2.18 80\n"
|
|
"address: DGRAM/UDP 192.0.2.18 80\n"
|
|
"address: RAW/IP 192.0.2.18 80\n");
|
|
check_ai_hints ("alias.example", "80",
|
|
(struct addrinfo) { .ai_family = AF_INET,
|
|
.ai_flags = AI_CANONNAME, },
|
|
"flags: AI_CANONNAME\n"
|
|
"canonname: www.example\n"
|
|
"address: STREAM/TCP 192.0.2.18 80\n"
|
|
"address: DGRAM/UDP 192.0.2.18 80\n"
|
|
"address: RAW/IP 192.0.2.18 80\n");
|
|
check_ai (LONG_NAME, "80", AF_INET,
|
|
"address: STREAM/TCP 192.0.2.20 80\n"
|
|
"address: DGRAM/UDP 192.0.2.20 80\n"
|
|
"address: RAW/IP 192.0.2.20 80\n");
|
|
check_ai ("www.example", "80", AF_INET6,
|
|
"address: STREAM/TCP 2001:db8::1 80\n"
|
|
"address: DGRAM/UDP 2001:db8::1 80\n"
|
|
"address: RAW/IP 2001:db8::1 80\n");
|
|
check_ai_hints ("www.example", "80",
|
|
(struct addrinfo) { .ai_family = AF_INET6,
|
|
.ai_flags = AI_CANONNAME, },
|
|
"flags: AI_CANONNAME\n"
|
|
"canonname: www.example\n"
|
|
"address: STREAM/TCP 2001:db8::1 80\n"
|
|
"address: DGRAM/UDP 2001:db8::1 80\n"
|
|
"address: RAW/IP 2001:db8::1 80\n");
|
|
check_ai ("alias.example", "80", AF_INET6,
|
|
"address: STREAM/TCP 2001:db8::2 80\n"
|
|
"address: DGRAM/UDP 2001:db8::2 80\n"
|
|
"address: RAW/IP 2001:db8::2 80\n");
|
|
check_ai_hints ("alias.example", "80",
|
|
(struct addrinfo) { .ai_family = AF_INET6,
|
|
.ai_flags = AI_CANONNAME, },
|
|
"flags: AI_CANONNAME\n"
|
|
"canonname: www.example\n"
|
|
"address: STREAM/TCP 2001:db8::2 80\n"
|
|
"address: DGRAM/UDP 2001:db8::2 80\n"
|
|
"address: RAW/IP 2001:db8::2 80\n");
|
|
check_ai (LONG_NAME, "80", AF_INET6,
|
|
"address: STREAM/TCP 2001:db8::4 80\n"
|
|
"address: DGRAM/UDP 2001:db8::4 80\n"
|
|
"address: RAW/IP 2001:db8::4 80\n");
|
|
|
|
check_h ("t.www.example", AF_INET,
|
|
"name: t.www.example\n"
|
|
"address: 192.0.2.19\n");
|
|
check_h ("t.alias.example", AF_INET,
|
|
"name: www.example\n"
|
|
"alias: t.alias.example\n"
|
|
"address: 192.0.2.20\n");
|
|
check_h ("t.www.example", AF_INET6,
|
|
"name: t.www.example\n"
|
|
"address: 2001:db8::3\n");
|
|
check_h ("t.alias.example", AF_INET6,
|
|
"name: www.example\n"
|
|
"alias: t.alias.example\n"
|
|
"address: 2001:db8::4\n");
|
|
check_ai ("t.www.example", "80", AF_UNSPEC,
|
|
"address: STREAM/TCP 192.0.2.19 80\n"
|
|
"address: DGRAM/UDP 192.0.2.19 80\n"
|
|
"address: RAW/IP 192.0.2.19 80\n"
|
|
"address: STREAM/TCP 2001:db8::3 80\n"
|
|
"address: DGRAM/UDP 2001:db8::3 80\n"
|
|
"address: RAW/IP 2001:db8::3 80\n");
|
|
check_ai ("t.alias.example", "80", AF_UNSPEC,
|
|
"address: STREAM/TCP 192.0.2.20 80\n"
|
|
"address: DGRAM/UDP 192.0.2.20 80\n"
|
|
"address: RAW/IP 192.0.2.20 80\n"
|
|
"address: STREAM/TCP 2001:db8::4 80\n"
|
|
"address: DGRAM/UDP 2001:db8::4 80\n"
|
|
"address: RAW/IP 2001:db8::4 80\n");
|
|
check_ai ("t.www.example", "80", AF_INET,
|
|
"address: STREAM/TCP 192.0.2.19 80\n"
|
|
"address: DGRAM/UDP 192.0.2.19 80\n"
|
|
"address: RAW/IP 192.0.2.19 80\n");
|
|
check_ai ("t.alias.example", "80", AF_INET,
|
|
"address: STREAM/TCP 192.0.2.20 80\n"
|
|
"address: DGRAM/UDP 192.0.2.20 80\n"
|
|
"address: RAW/IP 192.0.2.20 80\n");
|
|
check_ai ("t.www.example", "80", AF_INET6,
|
|
"address: STREAM/TCP 2001:db8::3 80\n"
|
|
"address: DGRAM/UDP 2001:db8::3 80\n"
|
|
"address: RAW/IP 2001:db8::3 80\n");
|
|
check_ai ("t.alias.example", "80", AF_INET6,
|
|
"address: STREAM/TCP 2001:db8::4 80\n"
|
|
"address: DGRAM/UDP 2001:db8::4 80\n"
|
|
"address: RAW/IP 2001:db8::4 80\n");
|
|
|
|
test_bug_21295 ();
|
|
test_nodata_nxdomain ();
|
|
|
|
resolv_test_end (aux);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|