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, 406 insertions, 0 deletions

diff --git a/REORG.TODO/resolv/tst-resolv-basic.c b/REORG.TODO/resolv/tst-resolv-basic.c
new file mode 100644
index 0000000..92f912b
--- /dev/null
+++ b/REORG.TODO/resolv/tst-resolv-basic.c
@@ -0,0 +1,406 @@
+/* Test basic nss_dns functionality and the resolver test harness itself.
+   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 <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>
+
+#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} 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
+    {
+      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 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);
+}
+
+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");
+
+  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>