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-rw-r--r--resolv/tst-resolv-basic.c315
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diff --git a/resolv/tst-resolv-basic.c b/resolv/tst-resolv-basic.c
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+/* Test basic nss_dns functionality and the resolver test harness itself.
+ Copyright (C) 2016 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/resolv_test.h>
+#include <support/support.h>
+
+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} 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
+ {
+ 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:
+ 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 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 (const char *name, const char *service,
+ int family, const char *expected)
+{
+ struct addrinfo hints = {.ai_family = family};
+ struct addrinfo *ai;
+ char *query = xasprintf ("%s:%s [%d]", name, service, family);
+ int ret = getaddrinfo (name, service, &hints, &ai);
+ check_addrinfo (query, ai, ret, expected);
+ if (ret == 0)
+ freeaddrinfo (ai);
+ free (query);
+}
+
+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_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 ("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 ("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 ("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 ("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 ("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_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");
+
+ check_h ("nxdomain.example", AF_INET,
+ "error: HOST_NOT_FOUND\n");
+ check_h ("nxdomain.example", AF_INET6,
+ "error: HOST_NOT_FOUND\n");
+ check_ai ("nxdomain.example", "80", AF_UNSPEC,
+ "error: Name or service not known\n");
+ check_ai ("nxdomain.example", "80", AF_INET,
+ "error: Name or service not known\n");
+ check_ai ("nxdomain.example", "80", AF_INET6,
+ "error: Name or service not known\n");
+
+ check_h ("t.nxdomain.example", AF_INET,
+ "error: HOST_NOT_FOUND\n");
+ check_h ("t.nxdomain.example", AF_INET6,
+ "error: HOST_NOT_FOUND\n");
+ check_ai ("t.nxdomain.example", "80", AF_UNSPEC,
+ "error: Name or service not known\n");
+ check_ai ("t.nxdomain.example", "80", AF_INET,
+ "error: Name or service not known\n");
+ check_ai ("t.nxdomain.example", "80", AF_INET6,
+ "error: Name or service not known\n");
+
+ resolv_test_end (aux);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 14:16:31 +0000