Switch IDNA implementation to libidn2 [BZ #19728] [BZ #19729] [BZ #22247]

This provides an implementation of the IDNA2008 standard and fixes
CVE-2016-6261, CVE-2016-6263, CVE-2017-14062.

1 files changed, 49 insertions, 0 deletions

diff --git a/resolv/tst-resolv-ai_idn.c b/resolv/tst-resolv-ai_idn.c
new file mode 100644
index 0000000000..df8203b14a
--- /dev/null
+++ b/resolv/tst-resolv-ai_idn.c
@@ -0,0 +1,49 @@
+/* Test getaddrinfo and getnameinfo with AI_IDN, NI_IDN (UTF-8).
+   Copyright (C) 2018 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/>.  */
+
+#define TEST_USE_UTF8 1
+#include "tst-resolv-ai_idn-common.c"
+
+#include <locale.h>
+#include <support/xdlfcn.h>
+
+static int
+do_test (void)
+{
+  void *handle = dlopen (LIBIDN2_SONAME, RTLD_LAZY);
+  if (handle == NULL)
+    FAIL_UNSUPPORTED ("libidn2 not installed");
+
+  if (setlocale (LC_CTYPE, "en_US.UTF-8") == NULL)
+    FAIL_EXIT1 ("setlocale: %m");
+
+  struct resolv_test *aux = resolv_test_start
+    ((struct resolv_redirect_config)
+     {
+       .response_callback = response,
+     });
+
+  gai_tests_with_libidn2 ();
+  gni_tests_with_libidn2 ();
+
+  resolv_test_end (aux);
+  xdlclose (handle);
+  return 0;
+}
+
+#include <support/test-driver.c>