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510 lines
18 KiB
C
510 lines
18 KiB
C
/* Basic functionality tests for inet6 option processing.
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Copyright (C) 2016-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <ctype.h>
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#include <netdb.h>
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#include <resolv.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <support/check.h>
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#include <support/check_nss.h>
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#include <support/resolv_test.h>
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#include <support/support.h>
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#include <support/xthread.h>
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/* Handle IPv4 reverse lookup responses. Product a PTR record
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A-B-C-D.v4.example. */
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static void
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response_ptr_v4 (const struct resolv_response_context *ctx,
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struct resolv_response_builder *b,
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const char *qname, uint16_t qclass, uint16_t qtype)
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{
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int bytes[4];
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int offset = -1;
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TEST_VERIFY (sscanf (qname, "%d.%d.%d.%d.in-addr.arpa%n",
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bytes + 0, bytes + 1, bytes + 2, bytes + 3,
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&offset) == 4);
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TEST_VERIFY (offset == strlen (qname));
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resolv_response_init (b, (struct resolv_response_flags) {});
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resolv_response_add_question (b, qname, qclass, qtype);
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resolv_response_section (b, ns_s_an);
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resolv_response_open_record (b, qname, qclass, T_PTR, 0);
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char *name = xasprintf ("%d-%d-%d-%d.v4.example",
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bytes[3], bytes[2], bytes[1], bytes[0]);
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resolv_response_add_name (b, name);
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free (name);
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resolv_response_close_record (b);
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}
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/* Handle IPv6 reverse lookup responses. Produce a PTR record
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<32 hex digits>.v6.example. */
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static void
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response_ptr_v6 (const struct resolv_response_context *ctx,
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struct resolv_response_builder *b,
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const char *qname, uint16_t qclass, uint16_t qtype)
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{
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TEST_VERIFY_EXIT (strlen (qname) > 64);
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char bytes[33];
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for (int i = 0; i < 64; ++i)
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if ((i % 2) == 0)
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{
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TEST_VERIFY (isxdigit ((unsigned char) qname[i]));
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bytes[31 - i / 2] = qname[i];
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}
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else
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TEST_VERIFY_EXIT (qname[i] == '.');
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bytes[32] = '\0';
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resolv_response_init (b, (struct resolv_response_flags) {});
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resolv_response_add_question (b, qname, qclass, qtype);
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resolv_response_section (b, ns_s_an);
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resolv_response_open_record (b, qname, qclass, T_PTR, 0);
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char *name = xasprintf ("%s.v6.example", bytes);
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resolv_response_add_name (b, name);
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free (name);
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resolv_response_close_record (b);
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}
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/* Produce a response based on QNAME: Certain characters in the first
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label of QNAME trigger the inclusion of resource records:
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'a' A record (IPv4 address)
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'q' AAAA record (quad A record, IPv6 address)
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'p' PTR record
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'm' record type must match QTYPE (no additional records)
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'6' stop flag processing if QTYPE == AAAA
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For 'a' and 'q', QTYPE is ignored for record type selection if 'm'
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is not specified.
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in-addr.arpa and ip6.arpa queries are handled separately in
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response_ptr_v4 and response_ptr_v6. */
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static void
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response (const struct resolv_response_context *ctx,
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struct resolv_response_builder *b,
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const char *qname, uint16_t qclass, uint16_t qtype)
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{
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if (strstr (qname, ".in-addr.arpa") != NULL)
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return response_ptr_v4 (ctx, b, qname, qclass, qtype);
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else if (strstr (qname, ".ip6.arpa") != NULL)
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return response_ptr_v6 (ctx, b, qname, qclass, qtype);
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bool include_a = false;
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bool include_aaaa = false;
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bool include_match = false;
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bool include_ptr = false;
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for (const char *p = qname; *p != '.' && *p != '\0'; ++p)
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{
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if (*p == 'a')
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include_a = true;
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else if (*p == 'q')
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include_aaaa = true;
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else if (*p == 'm')
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include_match = true;
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else if (*p == 'p')
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include_ptr = true;
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else if (*p == '6' && qtype == T_AAAA)
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break;
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}
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if (include_match)
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{
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if (qtype == T_A)
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include_aaaa = false;
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else if (qtype == T_AAAA)
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include_a = false;
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}
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resolv_response_init (b, (struct resolv_response_flags) {});
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resolv_response_add_question (b, qname, qclass, qtype);
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resolv_response_section (b, ns_s_an);
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if (include_a)
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{
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char ipv4[4] = {192, 0, 2, 17};
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resolv_response_open_record (b, qname, qclass, T_A, 0);
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resolv_response_add_data (b, &ipv4, sizeof (ipv4));
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resolv_response_close_record (b);
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}
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if (include_aaaa)
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{
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char ipv6[16]
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= {0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
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resolv_response_open_record (b, qname, qclass, T_AAAA, 0);
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resolv_response_add_data (b, &ipv6, sizeof (ipv6));
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resolv_response_close_record (b);
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}
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if (include_ptr)
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{
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resolv_response_open_record (b, qname, qclass, T_PTR, 0);
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resolv_response_add_name (b, "ptr-target.example");
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resolv_response_close_record (b);
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}
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}
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/* Test that getaddrinfo is not influenced by RES_USE_INET6. */
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static void
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test_gai (void)
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{
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{
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struct addrinfo hints =
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{
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.ai_family = AF_UNSPEC,
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.ai_socktype = SOCK_STREAM,
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.ai_protocol = IPPROTO_TCP,
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};
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struct addrinfo *ai;
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int ret = getaddrinfo ("qam.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_UNSPEC qam.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n"
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"address: STREAM/TCP 2001:db8::1 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("am.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_UNSPEC am.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("qa.example", "80", &hints, &ai);
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/* Combined A/AAAA responses currently result in address
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duplication. */
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check_addrinfo ("getaddrinfo AF_UNSPEC qa.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n"
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"address: STREAM/TCP 192.0.2.17 80\n"
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"address: STREAM/TCP 2001:db8::1 80\n"
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"address: STREAM/TCP 2001:db8::1 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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}
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{
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struct addrinfo hints =
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{
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.ai_family = AF_INET,
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.ai_socktype = SOCK_STREAM,
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.ai_protocol = IPPROTO_TCP,
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};
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struct addrinfo *ai;
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int ret = getaddrinfo ("qam.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET qam.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("am.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET am.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("qa.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET qa.example", ai, ret,
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"address: STREAM/TCP 192.0.2.17 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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}
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{
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struct addrinfo hints =
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{
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.ai_family = AF_INET6,
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.ai_socktype = SOCK_STREAM,
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.ai_protocol = IPPROTO_TCP,
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};
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struct addrinfo *ai;
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int ret = getaddrinfo ("qa.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo (AF_INET6)", ai, ret,
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"address: STREAM/TCP 2001:db8::1 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("am.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET6 am.example", ai, ret,
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"error: No address associated with hostname\n");
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if (ret == 0)
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freeaddrinfo (ai);
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ret = getaddrinfo ("qam.example", "80", &hints, &ai);
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check_addrinfo ("getaddrinfo AF_INET6 qam.example", ai, ret,
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"address: STREAM/TCP 2001:db8::1 80\n");
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if (ret == 0)
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freeaddrinfo (ai);
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}
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}
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/* Test gethostbyaddr and getnameinfo. The results are independent of
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RES_USE_INET6. */
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static void
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test_reverse (void)
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{
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{
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char ipv4[4] = { 192, 0, 2, 17 };
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check_hostent ("gethostbyaddr AF_INET",
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gethostbyaddr (ipv4, sizeof (ipv4), AF_INET),
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"name: 192-0-2-17.v4.example\n"
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"address: 192.0.2.17\n");
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}
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{
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char ipv6[16]
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= {0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
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check_hostent ("gethostbyaddr AF_INET",
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gethostbyaddr (ipv6, sizeof (ipv6), AF_INET6),
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"name: 20010db8000000000000000000000001.v6.example\n"
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"address: 2001:db8::1\n");
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}
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{
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struct sockaddr_in addr =
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{
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.sin_family = AF_INET,
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.sin_addr = { .s_addr = htonl (0xc0000211) },
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.sin_port = htons (80)
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};
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char host[NI_MAXHOST];
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char service[NI_MAXSERV];
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int ret = getnameinfo ((struct sockaddr *) &addr, sizeof (addr),
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host, sizeof (host), service, sizeof (service),
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NI_NUMERICSERV);
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TEST_VERIFY (ret == 0);
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TEST_VERIFY (strcmp (host, "192-0-2-17.v4.example") == 0);
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TEST_VERIFY (strcmp (service, "80") == 0);
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}
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{
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char ipv6[16]
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= {0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
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struct sockaddr_in6 addr =
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{
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.sin6_family = AF_INET6,
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.sin6_port = htons (80),
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};
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TEST_VERIFY (sizeof (ipv6) == sizeof (addr.sin6_addr));
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memcpy (&addr.sin6_addr, ipv6, sizeof (addr.sin6_addr));
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char host[NI_MAXHOST];
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char service[NI_MAXSERV];
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int ret = getnameinfo ((struct sockaddr *) &addr, sizeof (addr),
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host, sizeof (host), service, sizeof (service),
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NI_NUMERICSERV);
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TEST_VERIFY (ret == 0);
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TEST_VERIFY
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(strcmp (host, "20010db8000000000000000000000001.v6.example") == 0);
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TEST_VERIFY (strcmp (service, "80") == 0);
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}
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}
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/* Test that gethostbyname2 is mostly not influenced by
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RES_USE_INET6. */
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static void
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test_get2_any (void)
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{
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check_hostent ("gethostbyname2 AF_INET am.example",
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gethostbyname2 ("am.example", AF_INET),
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"name: am.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname2 AF_INET a.example",
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gethostbyname2 ("a.example", AF_INET),
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"name: a.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname2 AF_INET qm.example",
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gethostbyname2 ("qm.example", AF_INET),
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"error: NO_ADDRESS\n");
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check_hostent ("gethostbyname2 AF_INET q.example",
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gethostbyname2 ("q.example", AF_INET),
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"error: NO_RECOVERY\n");
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check_hostent ("gethostbyname2 AF_INET qam.example",
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gethostbyname2 ("qam.example", AF_INET),
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"name: qam.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname2 AF_INET qa.example",
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gethostbyname2 ("qa.example", AF_INET),
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"name: qa.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname2 AF_INET6 qm.example",
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gethostbyname2 ("qm.example", AF_INET6),
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"name: qm.example\n"
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"address: 2001:db8::1\n");
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check_hostent ("gethostbyname2 AF_INET6 q.example",
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gethostbyname2 ("q.example", AF_INET6),
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"name: q.example\n"
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"address: 2001:db8::1\n");
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check_hostent ("gethostbyname2 AF_INET6 qam.example",
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gethostbyname2 ("qam.example", AF_INET6),
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"name: qam.example\n"
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"address: 2001:db8::1\n");
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check_hostent ("gethostbyname2 AF_INET6 qa.example",
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gethostbyname2 ("qa.example", AF_INET6),
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"name: qa.example\n"
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"address: 2001:db8::1\n");
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/* Additional AF_INET6 tests depend on RES_USE_INET6; see below. */
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test_reverse ();
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}
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/* gethostbyname2 tests with RES_USE_INET6 disabled. */
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static void
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test_get2_no_inet6 (void)
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{
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test_get2_any ();
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check_hostent ("gethostbyname2 AF_INET6 am.example",
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gethostbyname2 ("am.example", AF_INET6),
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"error: NO_ADDRESS\n");
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check_hostent ("gethostbyname2 AF_INET6 a.example",
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gethostbyname2 ("a.example", AF_INET6),
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"error: NO_RECOVERY\n");
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}
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/* gethostbyname2 tests with RES_USE_INET6 enabled. */
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static void
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test_get2_inet6 (void)
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{
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test_get2_any ();
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check_hostent ("gethostbyname2 AF_INET6 am.example",
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gethostbyname2 ("am.example", AF_INET6),
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"name: am.example\n"
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"address: ::ffff:192.0.2.17\n");
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check_hostent ("gethostbyname2 AF_INET6 a.example",
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gethostbyname2 ("a.example", AF_INET6),
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"error: NO_RECOVERY\n");
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}
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/* Collection of tests which assume no RES_USE_INET6 flag. */
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static void
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test_no_inet6 (void)
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{
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check_hostent ("gethostbyname (\"a.example\")",
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gethostbyname ("a.example"),
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"name: a.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname (\"qa.example\")",
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gethostbyname ("qa.example"),
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"name: qa.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname (\"am.example\")",
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gethostbyname ("am.example"),
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"name: am.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname (\"amp.example\")",
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gethostbyname ("amp.example"),
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"name: amp.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname (\"qam.example\")",
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gethostbyname ("qam.example"),
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"name: qam.example\n"
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"address: 192.0.2.17\n");
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check_hostent ("gethostbyname (\"q.example\")",
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gethostbyname ("q.example"),
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"error: NO_RECOVERY\n");
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check_hostent ("gethostbyname (\"qm.example\")",
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gethostbyname ("qm.example"),
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"error: NO_ADDRESS\n");
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test_get2_no_inet6 ();
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test_get2_no_inet6 ();
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test_gai ();
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test_get2_no_inet6 ();
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test_get2_no_inet6 ();
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}
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static void *
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threadfunc (void *ignored)
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{
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struct resolv_test *obj = resolv_test_start
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((struct resolv_redirect_config)
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{
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.response_callback = response
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});
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TEST_VERIFY ((_res.options & RES_USE_INET6) == 0);
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test_no_inet6 ();
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_res.options |= RES_USE_INET6;
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check_hostent ("gethostbyname (\"a.inet6.example\")",
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gethostbyname ("a.inet6.example"),
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"error: NO_RECOVERY\n");
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check_hostent ("gethostbyname (\"am.inet6.example\")",
|
|
gethostbyname ("am.inet6.example"),
|
|
"name: am.inet6.example\n"
|
|
"address: ::ffff:192.0.2.17\n");
|
|
check_hostent ("gethostbyname (\"qa.inet6.example\")",
|
|
gethostbyname ("qa.inet6.example"),
|
|
"name: qa.inet6.example\n"
|
|
"address: 2001:db8::1\n");
|
|
check_hostent ("gethostbyname (\"qam.inet6.example\")",
|
|
gethostbyname ("qam.inet6.example"),
|
|
"name: qam.inet6.example\n"
|
|
"address: 2001:db8::1\n");
|
|
check_hostent ("gethostbyname (\"q.inet6.example\")",
|
|
gethostbyname ("q.inet6.example"),
|
|
"name: q.inet6.example\n"
|
|
"address: 2001:db8::1\n");
|
|
check_hostent ("gethostbyname (\"qm.inet6.example\")",
|
|
gethostbyname ("qm.inet6.example"),
|
|
"name: qm.inet6.example\n"
|
|
"address: 2001:db8::1\n");
|
|
check_hostent ("gethostbyname (\"amp.inet6.example\")",
|
|
gethostbyname ("amp.inet6.example"),
|
|
"error: NO_RECOVERY\n");
|
|
check_hostent ("gethostbyname (\"qmp.inet6.example\")",
|
|
gethostbyname ("qmp.inet6.example"),
|
|
"name: qmp.inet6.example\n"
|
|
"address: 2001:db8::1\n");
|
|
check_hostent ("gethostbyname (\"ap.inet6.example\")",
|
|
gethostbyname ("ap.inet6.example"),
|
|
"error: NO_RECOVERY\n");
|
|
check_hostent ("gethostbyname (\"6ap.inet6.example\")",
|
|
gethostbyname ("6ap.inet6.example"),
|
|
"name: 6ap.inet6.example\n"
|
|
"address: ::ffff:192.0.2.17\n");
|
|
check_hostent ("gethostbyname (\"am6p.inet6.example\")",
|
|
gethostbyname ("am6p.inet6.example"),
|
|
"name: am6p.inet6.example\n"
|
|
"address: ::ffff:192.0.2.17\n");
|
|
check_hostent ("gethostbyname (\"qp.inet6.example\")",
|
|
gethostbyname ("qp.inet6.example"),
|
|
"name: qp.inet6.example\n"
|
|
"address: 2001:db8::1\n");
|
|
test_get2_inet6 ();
|
|
test_get2_inet6 ();
|
|
test_gai ();
|
|
test_get2_inet6 ();
|
|
test_get2_inet6 ();
|
|
|
|
TEST_VERIFY (_res.options & RES_USE_INET6);
|
|
_res.options &= ~RES_USE_INET6;
|
|
test_no_inet6 ();
|
|
|
|
resolv_test_end (obj);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
resolv_test_init ();
|
|
|
|
/* Attempt to run on a non-main thread first. */
|
|
{
|
|
pthread_t thr = xpthread_create (NULL, threadfunc, NULL);
|
|
xpthread_join (thr);
|
|
}
|
|
|
|
/* Try the main thread next. */
|
|
threadfunc (NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|