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// Copyright 2021 Code Intelligence GmbH
//
// Licensed 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.
package com.code_intelligence.jazzer.utils
private val BASE_INCLUDED_CLASS_NAME_GLOBS = listOf(
"**", // everything
)
// We use both a strong indicator for running as a Bazel test together with an indicator for a
// Bazel coverage run to rule out false positives.
private val IS_BAZEL_COVERAGE_RUN = System.getenv("TEST_UNDECLARED_OUTPUTS_DIR") != null &&
System.getenv("COVERAGE_DIR") != null
private val ADDITIONAL_EXCLUDED_NAME_GLOBS_FOR_BAZEL_COVERAGE = listOf(
"com.google.testing.coverage.**",
"org.jacoco.**",
)
private val BASE_EXCLUDED_CLASS_NAME_GLOBS = listOf(
// JDK internals
"\\[**", // array types
"java.**",
"javax.**",
"jdk.**",
"sun.**",
"com.sun.**", // package for Proxy objects
// Azul JDK internals
"com.azul.tooling.**",
// Kotlin internals
"kotlin.**",
// Jazzer internals
"com.code_intelligence.jazzer.**",
"jaz.Ter", // safe companion of the honeypot class used by sanitizers
"jaz.Zer", // honeypot class used by sanitizers
) + if (IS_BAZEL_COVERAGE_RUN) ADDITIONAL_EXCLUDED_NAME_GLOBS_FOR_BAZEL_COVERAGE else listOf()
class ClassNameGlobber(includes: List<String>, excludes: List<String>) {
// If no include globs are provided, start with all classes.
private val includeMatchers = includes.ifEmpty { BASE_INCLUDED_CLASS_NAME_GLOBS }
.map(::SimpleGlobMatcher)
// If no include globs are provided, additionally exclude stdlib classes as well as our own classes.
private val excludeMatchers = (if (includes.isEmpty()) BASE_EXCLUDED_CLASS_NAME_GLOBS + excludes else excludes)
.map(::SimpleGlobMatcher)
fun includes(className: String): Boolean {
return includeMatchers.any { it.matches(className) } && excludeMatchers.none { it.matches(className) }
}
}
class SimpleGlobMatcher(val glob: String) {
private enum class Type {
// foo.bar (matches foo.bar only)
FULL_MATCH,
// foo.** (matches foo.bar and foo.bar.baz)
PATH_WILDCARD_SUFFIX,
// foo.* (matches foo.bar, but not foo.bar.baz)
SEGMENT_WILDCARD_SUFFIX,
}
private val type: Type
private val prefix: String
init {
// Remain compatible with globs such as "\\[" that use escaping.
val pattern = glob.replace("\\", "")
when {
!pattern.contains('*') -> {
type = Type.FULL_MATCH
prefix = pattern
}
// Ends with "**" and contains no other '*'.
pattern.endsWith("**") && pattern.indexOf('*') == pattern.length - 2 -> {
type = Type.PATH_WILDCARD_SUFFIX
prefix = pattern.removeSuffix("**")
}
// Ends with "*" and contains no other '*'.
pattern.endsWith('*') && pattern.indexOf('*') == pattern.length - 1 -> {
type = Type.SEGMENT_WILDCARD_SUFFIX
prefix = pattern.removeSuffix("*")
}
else -> throw IllegalArgumentException(
"Unsupported glob pattern (only foo.bar, foo.* and foo.** are supported): $pattern"
)
}
}
/**
* Checks whether [maybeInternalClassName], which may be internal (foo/bar) or not (foo.bar), matches [glob].
*/
fun matches(maybeInternalClassName: String): Boolean {
val className = maybeInternalClassName.replace('/', '.')
return when (type) {
Type.FULL_MATCH -> className == prefix
Type.PATH_WILDCARD_SUFFIX -> className.startsWith(prefix)
Type.SEGMENT_WILDCARD_SUFFIX -> {
// className starts with prefix and contains no further '.'.
className.startsWith(prefix) &&
className.indexOf('.', startIndex = prefix.length) == -1
}
}
}
}
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