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TestKt.kt
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import java.io.File
import java.net.URI
import java.nio.file.Path
import java.nio.file.Paths
import android.net.Uri
class TestKt {
fun source(): Any? {
return null
}
fun sink(o: Any?) {}
@Throws(Exception::class)
private fun exactPathMatchGuardValidation(path: String?) {
if (!path.equals("/safe/path")) throw Exception()
}
@Throws(Exception::class)
fun exactPathMatchGuard() {
run {
val source = source() as String?
if (source!!.equals("/safe/path"))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as String?
if ("/safe/path".equals(source))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as URI?
if (source!!.equals(URI("http://safe/uri")))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as File?
if (source!!.equals(File("/safe/file")))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as Uri?
if (source!!.equals(Uri.parse("http://safe/uri")))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as String?
exactPathMatchGuardValidation(source)
sink(source) // Safe
}
}
@Throws(Exception::class)
private fun allowListGuardValidation(path: String?) {
if (path!!.contains("..") || !path.startsWith("/safe")) throw Exception()
}
@Throws(Exception::class)
fun allowListGuard() {
// Prefix check by itself is not enough
run {
val source = source() as String?
if (source!!.startsWith("/safe")) {
sink(source) // $ hasTaintFlow
} else
sink(source) // $ hasTaintFlow
}
// PathTraversalGuard + allowListGuard
run {
val source = source() as String?
if (!source!!.contains("..") && source.startsWith("/safe"))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as String?
if (source!!.indexOf("..") == -1 && source.startsWith("/safe"))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as String?
if (source!!.lastIndexOf("..") == -1 && source.startsWith("/safe"))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
// PathTraversalSanitizer + allowListGuard
run {
val source: File? = source() as File?
val normalized: String = source!!.canonicalPath
if (normalized.startsWith("/safe")) {
sink(source) // Safe
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ hasTaintFlow
}
}
run {
val source: File? = source() as File?
val normalized: File = source!!.canonicalFile
if (normalized.startsWith("/safe")) {
sink(source) // Safe
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ hasTaintFlow
}
}
run {
val source: File? = source() as File?
val normalized: String = source!!.canonicalFile.toString()
if (normalized.startsWith("/safe")) {
sink(source) // Safe
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ hasTaintFlow
}
}
run {
val source = source() as String?
val normalized: Path = Paths.get(source).normalize()
if (normalized.startsWith("/safe")) {
sink(source) // Safe
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (normalized.startsWith("/safe")) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (normalized.regionMatches(0, "/safe", 0, 5)) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (normalized.matches("/safe/.*".toRegex())) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
// validation method
run {
val source = source() as String?
allowListGuardValidation(source)
sink(source) // Safe
}
// PathInjectionSanitizer + partial string match is considered unsafe
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (normalized.contains("/safe")) {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (normalized.regionMatches(1, "/safe", 0, 5)) {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (normalized.matches(".*/safe/.*".toRegex())) {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
}
@Throws(Exception::class)
private fun dotDotCheckGuardValidation(path: String?) {
if (!path!!.startsWith("/safe") || path.contains("..")) throw Exception()
}
@Throws(Exception::class)
fun dotDotCheckGuard() {
// dot dot check by itself is not enough
run {
val source = source() as String?
if (!source!!.contains("..")) {
sink(source) // $ hasTaintFlow
} else
sink(source) // $ hasTaintFlow
}
// allowListGuard + dotDotCheckGuard
run {
val source = source() as String?
if (source!!.startsWith("/safe") && !source.contains(".."))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as String?
if (source!!.startsWith("/safe") && source.indexOf("..") == -1)
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as String?
if (!source!!.startsWith("/safe") || source.indexOf("..") != -1)
sink(source) // $ hasTaintFlow
else
sink(source) // Safe
}
run {
val source = source() as String?
if (source!!.startsWith("/safe") && source.lastIndexOf("..") == -1)
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
// blockListGuard + dotDotCheckGuard
run {
val source = source() as String?
if (!source!!.startsWith("/data") && !source.contains(".."))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as String?
if (!source!!.startsWith("/data") && source.indexOf("..") == -1)
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as String?
if (source!!.startsWith("/data") || source.indexOf("..") != -1)
sink(source) // $ hasTaintFlow
else
sink(source) // Safe
}
run {
val source = source() as String?
if (!source!!.startsWith("/data") && source.lastIndexOf("..") == -1)
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
// validation method
run {
val source = source() as String?
dotDotCheckGuardValidation(source)
sink(source) // Safe
}
}
@Throws(Exception::class)
private fun blockListGuardValidation(path: String?) {
if (path!!.contains("..") || path.startsWith("/data")) throw Exception()
}
@Throws(Exception::class)
fun blockListGuard() {
// Prefix check by itself is not enough
run {
val source = source() as String?
if (!source!!.startsWith("/data")) {
sink(source) // $ hasTaintFlow
} else
sink(source) // $ hasTaintFlow
}
// PathTraversalGuard + blockListGuard
run {
val source = source() as String?
if (!source!!.contains("..") && !source.startsWith("/data"))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as String?
if (source!!.indexOf("..") == -1 && !source.startsWith("/data"))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
run {
val source = source() as String?
if (source!!.lastIndexOf("..") == -1 && !source.startsWith("/data"))
sink(source) // Safe
else
sink(source) // $ hasTaintFlow
}
// PathTraversalSanitizer + blockListGuard
run {
val source: File? = source() as File?
val normalized: String = source!!.canonicalPath
if (!normalized.startsWith("/data")) {
sink(source) // Safe
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ hasTaintFlow
}
}
run {
val source: File? = source() as File?
val normalized: File = source!!.canonicalFile
if (!normalized.startsWith("/data")) {
sink(source) // Safe
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ hasTaintFlow
}
}
run {
val source: File? = source() as File?
val normalized: String = source!!.canonicalFile.toString()
if (!normalized.startsWith("/data")) {
sink(source) // Safe
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ hasTaintFlow
}
}
run {
val source = source() as String?
val normalized: Path = Paths.get(source).normalize()
if (!normalized.startsWith("/data")) {
sink(source) // Safe
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (!normalized.startsWith("/data")) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (!normalized.regionMatches(0, "/data", 0, 5)) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (!normalized.matches("/data/.*".toRegex())) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
// validation method
run {
val source = source() as String?
blockListGuardValidation(source)
sink(source) // Safe
}
// PathInjectionSanitizer + partial string match with disallowed words
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (!normalized.contains("/")) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (!normalized.regionMatches(1, "/", 0, 5)) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (!normalized.matches("/".toRegex())) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
// PathInjectionSanitizer + partial string match with disallowed prefixes
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (!normalized.contains("/data")) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (!normalized.regionMatches(1, "/data", 0, 5)) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
run {
val source = source() as String?
// normalize().toString() gets extracted as Object.toString, stopping taint here
val normalized: String = Paths.get(source).normalize().toString()
if (!normalized.matches(".*/data/.*".toRegex())) {
sink(source) // $ SPURIOUS: hasTaintFlow
sink(normalized) // Safe
} else {
sink(source) // $ hasTaintFlow
sink(normalized) // $ MISSING: hasTaintFlow
}
}
}
}