chimera: hybrid of Hyperscan and PCRE

2025-11-16 01:12:15 +03:00 · 2018-03-09 03:52:12 -05:00
parent 8a1c497f44
commit bf87f8c003
47 changed files with 6985 additions and 202 deletions
--- a/unit/chimera/bad_patterns.cpp
+++ b/unit/chimera/bad_patterns.cpp
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2018, Intel Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *  * Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "gtest/gtest.h"
+#include "chimera/ch.h"
+
+using namespace testing;
+
+class HybridCompile : public TestWithParam<const char *> {
+    // empty
+};
+
+TEST_P(HybridCompile, BadPattern) {
+    ch_error_t err;
+    ch_compile_error_t *compile_err = nullptr;
+    const char *pattern = GetParam();
+    ch_database_t *db = nullptr;
+
+    err = ch_compile_multi(&pattern, nullptr, nullptr, 1, 0, nullptr, &db,
+                           &compile_err);
+    ASSERT_NE(CH_SUCCESS, err) << "Compile should have failed for expr: "
+        << pattern;
+    ASSERT_TRUE(db == nullptr);
+    ASSERT_TRUE(compile_err != nullptr);
+
+    ch_free_compile_error(compile_err);
+}
+
+static
+const char * BAD_PATTERNS[] = {
+    // unmatched parens
+    "(foo",
+    "foo)",
+    "((foo)",
+    "(foo))",
+    // nothing to repeat
+    "a+++",
+    "a+?+",
+    "a???",
+    "a??+",
+    "?qa",
+    "*abc",
+    "+abc",
+    // repeating boundaries is not allowed (UE-1007)
+    "^?0",
+    "^*0",
+    "^+0",
+    "^{1,3}0",
+    "0$?",
+    "0$*",
+    "0$+",
+    "0${1,3}",
+    // char classes
+    "[]",
+    "[]foobar",
+    "[`-\\80",
+    // bad named classes
+    "[[:foo:]]",
+    "[[:1234:]]",
+    "[[:f\\oo:]]",
+    "[[: :]]",
+    "[[:...:]]",
+    "[[:l\\ower:]]",
+    "[[:abc\\:]]",
+    "[abc[:x\\]pqr:]]",
+    "[[:a\\dz:]]",
+    "foobar\\", // trailing unescaped backslash
+};
+
+INSTANTIATE_TEST_CASE_P(Compile, HybridCompile, ValuesIn(BAD_PATTERNS));