ap_find_token: add unit tests

Add previously embargoed test case for CVE-2017-7668.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/httpdunit@1799377 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 88 insertions, 0 deletions

diff --git a/test/unit/util.c b/test/unit/util.c
new file mode 100644
index 0000000000..17c10931a5
--- /dev/null
+++ b/test/unit/util.c
@@ -0,0 +1,88 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "check.h"
+#include "../httpdunit.h"
+
+#include "httpd.h"
+
+/*
+ * Test Fixture -- runs once per test
+ */
+
+static apr_pool_t *g_pool;
+
+static void util_setup(void)
+{
+    if (apr_pool_create(&g_pool, NULL) != APR_SUCCESS) {
+        exit(1);
+    }
+}
+
+static void util_teardown(void)
+{
+    apr_pool_destroy(g_pool);
+}
+
+/*
+ * ap_test_token()
+ */
+
+struct ap_test_token_case {
+    const char *list;
+    const char *token;
+    int expected;
+};
+
+const struct ap_test_token_case ap_test_token_cases[] = {
+    { "one, two, three",   "one",   1 },
+    { "one, two, three",   "two",   1 },
+    { "one, two, three",   "three", 1 },
+    { "one,two,three",     "two",   1 },
+    { NULL,                "token", 0 },
+
+    /* Regression test for CVE-2017-7668 */
+    { "one, two, \0three", "three", 0 },
+
+    /*
+     * Dubious compatibility cases
+     */
+    { ",\x01,one,,two,/,,three,,", "one",   1 },
+    { ",\x01,one,,two,/,,three,,", "two",   1 },
+    { ",\x01,one,,two,/,,three,,", "three", 1 },
+    { ",\x01,one,,two,/,,three,,", "\x01",  0 },
+    { ",\x01,one,,two,/,,three,,", "/",     0 },
+};
+
+const size_t ap_test_token_cases_len = sizeof(ap_test_token_cases) /
+                                       sizeof(ap_test_token_cases[0]);
+
+HTTPD_START_LOOP_TEST(find_token_correctly_parses_token_list, ap_test_token_cases_len)
+{
+    const struct ap_test_token_case *c = &ap_test_token_cases[_i];
+    int result;
+
+    result = ap_find_token(g_pool, c->list, c->token);
+    ck_assert_int_eq(result, c->expected);
+}
+END_TEST
+
+/*
+ * Test Case Boilerplate
+ */
+HTTPD_BEGIN_TEST_CASE_WITH_FIXTURE(util, util_setup, util_teardown)
+#include "test/unit/util.tests"
+HTTPD_END_TEST_CASE