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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.sanitizers
import com.code_intelligence.jazzer.api.Jazzer
import java.io.InputStream
/**
* jaz.Zer is a honeypot class: All of its methods report a finding when called.
*/
const val HONEYPOT_CLASS_NAME = "jaz.Zer"
const val HONEYPOT_LIBRARY_NAME = "jazzer_honeypot"
internal fun Short.toBytes(): ByteArray {
return byteArrayOf(
((toInt() shr 8) and 0xFF).toByte(),
(toInt() and 0xFF).toByte(),
)
}
// Runtime is only O(size * needle.size), only use for small arrays.
internal fun ByteArray.indexOf(needle: ByteArray): Int {
outer@ for (i in 0 until size - needle.size + 1) {
for (j in needle.indices) {
if (this[i + j] != needle[j]) {
continue@outer
}
}
return i
}
return -1
}
internal fun guideMarkableInputStreamTowardsEquality(stream: InputStream, target: ByteArray, id: Int) {
fun readBytes(stream: InputStream, size: Int): ByteArray {
val current = ByteArray(size)
var n = 0
while (n < size) {
val count = stream.read(current, n, size - n)
if (count < 0) break
n += count
}
return current
}
check(stream.markSupported())
stream.mark(target.size)
val current = readBytes(stream, target.size)
stream.reset()
Jazzer.guideTowardsEquality(current, target, id)
}
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