Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 201 insertions, 0 deletions

diff --git a/REORG.TODO/resolv/tst-res_use_inet6.c b/REORG.TODO/resolv/tst-res_use_inet6.c
new file mode 100644
index 0000000000..6f3db08892
--- /dev/null
+++ b/REORG.TODO/resolv/tst-res_use_inet6.c
@@ -0,0 +1,201 @@
+/* Basic functionality tests for inet6 option processing.
+   Copyright (C) 2016-2017 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 <netdb.h>
+#include <resolv.h>
+#include <string.h>
+#include <support/check_nss.h>
+#include <support/resolv_test.h>
+#include <support/xthread.h>
+
+static void
+response (const struct resolv_response_context *ctx,
+          struct resolv_response_builder *b,
+          const char *qname, uint16_t qclass, uint16_t qtype)
+{
+  bool include_both =  strcmp (qname, "both.example") == 0;
+  bool include_a = qtype == T_A || include_both;
+  bool include_aaaa = qtype == T_AAAA || include_both;
+
+  resolv_response_init (b, (struct resolv_response_flags) {});
+  resolv_response_add_question (b, qname, qclass, qtype);
+  resolv_response_section (b, ns_s_an);
+  if (include_a)
+    {
+      char ipv4[4] = {192, 0, 2, 17};
+      resolv_response_open_record (b, qname, qclass, T_A, 0);
+      resolv_response_add_data (b, &ipv4, sizeof (ipv4));
+      resolv_response_close_record (b);
+    }
+  if (include_aaaa)
+    {
+        char ipv6[16]
+          = {0x20, 0x01, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
+        resolv_response_open_record (b, qname, qclass, T_AAAA, 0);
+        resolv_response_add_data (b, &ipv6, sizeof (ipv6));
+        resolv_response_close_record (b);
+    }
+}
+
+/* Test that getaddrinfo is not influenced by RES_USE_INET6.  */
+static void
+test_gai (void)
+{
+  {
+    struct addrinfo hints =
+      {
+        .ai_family = AF_UNSPEC,
+        .ai_socktype = SOCK_STREAM,
+        .ai_protocol = IPPROTO_TCP,
+      };
+    struct addrinfo *ai;
+    int ret = getaddrinfo ("www1.example", "80", &hints, &ai);
+    check_addrinfo ("getaddrinfo AF_UNSPEC www1.example", ai, ret,
+                    "address: STREAM/TCP 192.0.2.17 80\n"
+                    "address: STREAM/TCP 2001:db8::1 80\n");
+    if (ret == 0)
+      freeaddrinfo (ai);
+    ret = getaddrinfo ("both.example", "80", &hints, &ai);
+    /* Combined A/AAAA responses currently result in address
+       duplication.  */
+    check_addrinfo ("getaddrinfo AF_UNSPEC both.example", ai, ret,
+                    "address: STREAM/TCP 192.0.2.17 80\n"
+                    "address: STREAM/TCP 192.0.2.17 80\n"
+                    "address: STREAM/TCP 2001:db8::1 80\n"
+                    "address: STREAM/TCP 2001:db8::1 80\n");
+    if (ret == 0)
+      freeaddrinfo (ai);
+  }
+  {
+    struct addrinfo hints =
+      {
+        .ai_family = AF_INET,
+        .ai_socktype = SOCK_STREAM,
+        .ai_protocol = IPPROTO_TCP,
+      };
+    struct addrinfo *ai;
+    int ret = getaddrinfo ("www1.example", "80", &hints, &ai);
+    check_addrinfo ("getaddrinfo AF_INET www1.example", ai, ret,
+                    "address: STREAM/TCP 192.0.2.17 80\n");
+    if (ret == 0)
+      freeaddrinfo (ai);
+    ret = getaddrinfo ("both.example", "80", &hints, &ai);
+    check_addrinfo ("getaddrinfo AF_INET both.example", ai, ret,
+                    "address: STREAM/TCP 192.0.2.17 80\n");
+    if (ret == 0)
+      freeaddrinfo (ai);
+  }
+  {
+    struct addrinfo hints =
+      {
+        .ai_family = AF_INET6,
+        .ai_socktype = SOCK_STREAM,
+        .ai_protocol = IPPROTO_TCP,
+      };
+    struct addrinfo *ai;
+    int ret = getaddrinfo ("www1.example", "80", &hints, &ai);
+    check_addrinfo ("getaddrinfo (AF_INET6)", ai, ret,
+                    "address: STREAM/TCP 2001:db8::1 80\n");
+    if (ret == 0)
+      freeaddrinfo (ai);
+    ret = getaddrinfo ("both.example", "80", &hints, &ai);
+    check_addrinfo ("getaddrinfo AF_INET6 both.example", ai, ret,
+                    "address: STREAM/TCP 2001:db8::1 80\n");
+    if (ret == 0)
+      freeaddrinfo (ai);
+  }
+}
+
+/* Test that gethostbyname2 is not influenced by RES_USE_INET6.  */
+static void
+test_get2 (void)
+{
+  check_hostent ("gethostbyname2 AF_INET www1.example",
+                 gethostbyname2 ("www1.example", AF_INET),
+                 "name: www1.example\n"
+                 "address: 192.0.2.17\n");
+  check_hostent ("gethostbyname2 AF_INET both.example",
+                 gethostbyname2 ("both.example", AF_INET),
+                 "name: both.example\n"
+                 "address: 192.0.2.17\n");
+
+  check_hostent ("gethostbyname2 AF_INET6 www1.example",
+                 gethostbyname2 ("www1.example", AF_INET6),
+                 "name: www1.example\n"
+                 "address: 2001:db8::1\n");
+  check_hostent ("gethostbyname2 AF_INET6 both.example",
+                 gethostbyname2 ("both.example", AF_INET6),
+                 "name: both.example\n"
+                 "address: 2001:db8::1\n");
+}
+
+static void *
+threadfunc (void *ignored)
+{
+  struct resolv_test *obj = resolv_test_start
+    ((struct resolv_redirect_config)
+     {
+       .response_callback = response
+     });
+
+  check_hostent ("gethostbyname (\"www1.example\")",
+                 gethostbyname ("www1.example"),
+                 "name: www1.example\n"
+                 "address: 192.0.2.17\n");
+  check_hostent ("gethostbyname (\"both.example\")",
+                 gethostbyname ("both.example"),
+                 "name: both.example\n"
+                 "address: 192.0.2.17\n");
+  test_get2 ();
+  test_gai ();
+
+  _res.options |= RES_USE_INET6;
+  check_hostent ("gethostbyname (\"www1.example\")",
+                 gethostbyname ("www1.example"),
+                 "name: www1.example\n"
+                 "address: 2001:db8::1\n");
+  check_hostent ("gethostbyname (\"both.example\")",
+                 gethostbyname ("both.example"),
+                 "name: both.example\n"
+                 "address: 2001:db8::1\n");
+  test_get2 ();
+  test_gai ();
+
+  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>