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, 73 insertions, 0 deletions

diff --git a/inet/tst-idna_name_classify.c b/inet/tst-idna_name_classify.c
new file mode 100644
index 0000000000..c4a2c91329
--- /dev/null
+++ b/inet/tst-idna_name_classify.c
@@ -0,0 +1,73 @@
+/* Test IDNA name classification.
+   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/>.  */
+
+#include <inet/net-internal.h>
+#include <locale.h>
+#include <stdio.h>
+#include <support/check.h>
+
+static void
+locale_insensitive_tests (void)
+{
+  TEST_COMPARE (__idna_name_classify (""), idna_name_ascii);
+  TEST_COMPARE (__idna_name_classify ("abc"), idna_name_ascii);
+  TEST_COMPARE (__idna_name_classify (".."), idna_name_ascii);
+  TEST_COMPARE (__idna_name_classify ("\001abc\177"), idna_name_ascii);
+  TEST_COMPARE (__idna_name_classify ("\\065bc"), idna_name_ascii);
+}
+
+static int
+do_test (void)
+{
+  puts ("info: C locale tests");
+  locale_insensitive_tests ();
+  TEST_COMPARE (__idna_name_classify ("abc\200def"),
+                idna_name_encoding_error);
+  TEST_COMPARE (__idna_name_classify ("abc\200\\def"),
+                idna_name_encoding_error);
+  TEST_COMPARE (__idna_name_classify ("abc\377def"),
+                idna_name_encoding_error);
+
+  puts ("info: en_US.ISO-8859-1 locale tests");
+  if (setlocale (LC_CTYPE, "en_US.ISO-8859-1") == 0)
+    FAIL_EXIT1 ("setlocale for en_US.ISO-8859-1: %m\n");
+  locale_insensitive_tests ();
+  TEST_COMPARE (__idna_name_classify ("abc\200def"), idna_name_nonascii);
+  TEST_COMPARE (__idna_name_classify ("abc\377def"), idna_name_nonascii);
+  TEST_COMPARE (__idna_name_classify ("abc\\\200def"),
+                idna_name_nonascii_backslash);
+  TEST_COMPARE (__idna_name_classify ("abc\200\\def"),
+                idna_name_nonascii_backslash);
+
+  puts ("info: en_US.UTF-8 locale tests");
+  if (setlocale (LC_CTYPE, "en_US.UTF-8") == 0)
+    FAIL_EXIT1 ("setlocale for en_US.UTF-8: %m\n");
+  locale_insensitive_tests ();
+  TEST_COMPARE (__idna_name_classify ("abc\xc3\x9f""def"), idna_name_nonascii);
+  TEST_COMPARE (__idna_name_classify ("abc\\\xc3\x9f""def"),
+                idna_name_nonascii_backslash);
+  TEST_COMPARE (__idna_name_classify ("abc\xc3\x9f\\def"),
+                idna_name_nonascii_backslash);
+  TEST_COMPARE (__idna_name_classify ("abc\200def"), idna_name_encoding_error);
+  TEST_COMPARE (__idna_name_classify ("abc\xc3""def"), idna_name_encoding_error);
+  TEST_COMPARE (__idna_name_classify ("abc\xc3"), idna_name_encoding_error);
+
+  return 0;
+}
+
+#include <support/test-driver.c>