commit 5c1a69238fcb87ff7f916a5ce7960b2864afb3a1
Author: Florian Weimer <fweimer@redhat.com>
Date: Sat Nov 11 11:23:40 2017 +0100
resolv: Add tst-res_hnok
diff --git a/resolv/Makefile b/resolv/Makefile
index 988871086a70b291..b1fd2e2db8736f9b 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -50,6 +50,7 @@ tests += \
tst-ns_name \
tst-ns_name_compress \
tst-res_hconf_reorder \
+ tst-res_hnok \
tst-res_use_inet6 \
tst-resolv-basic \
tst-resolv-edns \
@@ -182,6 +183,7 @@ $(objpfx)tst-resolv-canonname: \
$(objpfx)tst-ns_name: $(objpfx)libresolv.so
$(objpfx)tst-ns_name.out: tst-ns_name.data
$(objpfx)tst-ns_name_compress: $(objpfx)libresolv.so
+$(objpfx)tst-res_hnok: $(objpfx)libresolv.so
# This test case uses the deprecated RES_USE_INET6 resolver option.
diff --git a/resolv/tst-res_hnok.c b/resolv/tst-res_hnok.c
new file mode 100644
index 0000000000000000..9c923038218e965c
--- /dev/null
+++ b/resolv/tst-res_hnok.c
@@ -0,0 +1,153 @@
+/* Tests for res_hnok and related functions.
+ Copyright (C) 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 <array_length.h>
+#include <resolv.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/test-driver.h>
+
+/* Bits which indicate which functions are supposed to report
+ success. */
+enum
+ {
+ hnok = 1,
+ dnok = 2,
+ mailok = 4,
+ ownok = 8,
+ allnomailok = hnok | dnok | ownok,
+ allok = hnok | dnok | mailok | ownok
+ };
+
+/* A string of 60 characters. */
+#define STRING60 "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
+
+/* A string of 63 characters (maximum label length). */
+#define STRING63 STRING60 "zzz"
+
+/* Combines a test name with the expected results. */
+struct test_case
+{
+ const char *dn;
+ unsigned int result; /* Combination of the *ok flags. */
+};
+
+static const struct test_case tests[] =
+ {
+ { "", allok },
+ { ".", allok },
+ { "www", allnomailok },
+ { "example", allnomailok },
+ { "example.com", allok },
+ { "www.example.com", allok },
+ { "www.example.com.", allok },
+ { "*.example.com", dnok | mailok | ownok },
+ { "-v", dnok },
+ { "-v.example.com", mailok | dnok },
+ { "**.example.com", dnok | mailok },
+ { STRING63, allnomailok },
+ { STRING63 ".example.com", allok },
+ { STRING63 "." STRING63 "." STRING63 "." STRING60 "z", allok },
+ { "hostmaster@mail.example.com", dnok | mailok },
+ { "with whitespace", 0 },
+ { "with\twhitespace", 0 },
+ { "with\nwhitespace", 0 },
+ { "with.whitespace ", 0 },
+ { "with.whitespace\t", 0 },
+ { "with.whitespace\n", 0 },
+ { "with\\ whitespace", 0 },
+ { "with\\\twhitespace", 0 },
+ { "with\\\nwhitespace", 0 },
+ { "with.whitespace\\ ", 0 },
+ { "with.whitespace\\\t", 0 },
+ { "with.whitespace\\\n", 0 },
+ };
+
+/* Run test case *TEST with FUNC (named FUNCNAME) and report an error
+ if the result does not match the result flag at BIT. */
+static void
+one_test (const struct test_case *test, const char *funcname,
+ int (*func) (const char *), unsigned int bit)
+{
+ int expected = (test->result & bit) != 0;
+ int actual = func (test->dn);
+ if (actual != expected)
+ {
+ support_record_failure ();
+ printf ("error: %s (\"%s\"): expected=%d, actual=%d\n",
+ funcname, test->dn, expected, actual);
+ }
+}
+
+/* Run 255 tests using all the bytes from 1 to 255, surround the byte
+ with the strings PREFIX and SUFFIX, and check that FUNC (named
+ FUNCNAME) accepts only those bytes listed in ACCEPTED. */
+static void
+one_char (const char *prefix, const char *accepted, const char *suffix,
+ const char *funcname, int (*func) (const char *))
+{
+ for (int ch = 1; ch <= 255; ++ch)
+ {
+ char dn[1024];
+ snprintf (dn, sizeof (dn), "%s%c%s", prefix, ch, suffix);
+ int expected = strchr (accepted, ch) != NULL;
+ int actual = func (dn);
+ if (actual != expected)
+ {
+ support_record_failure ();
+ printf ("error: %s (\"%s\"): expected=%d, actual=%d\n",
+ funcname, dn, expected, actual);
+ }
+ }
+}
+
+static int
+do_test (void)
+{
+ for (const struct test_case *test = tests; test < array_end (tests); ++test)
+ {
+ if (test_verbose)
+ printf ("info: testing domain name [[[%s]]] (0x%x)\n",
+ test->dn, test->result);
+ one_test (test, "res_hnok", res_hnok, hnok);
+ one_test (test, "res_dnok", res_dnok, dnok);
+ one_test (test, "res_mailok", res_mailok, mailok);
+ one_test (test, "res_ownok", res_ownok, ownok);
+ }
+
+ one_char
+ ("", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.",
+ "", "res_hnok", res_hnok);
+ one_char
+ ("middle",
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.-_",
+ "suffix", "res_hnok", res_hnok);
+ one_char
+ ("middle",
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.-_"
+ "!\"#$%&'()*+,/:;<=>?@[\\]^`{|}~",
+ "suffix.example", "res_mailok", res_mailok);
+ one_char
+ ("mailbox.middle",
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.-_",
+ "suffix.example", "res_mailok", res_mailok);
+
+ return 0;
+}
+
+#include <support/test-driver.c>