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90 lines
2.9 KiB
90 lines
2.9 KiB
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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package codetoanalyze.java.quandary;
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import android.content.Intent;
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import android.os.Parcel;
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import com.facebook.infer.builtins.InferTaint;
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/** testing how the analysis handles missing/unknown code */
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public abstract class UnknownCode {
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static native Object nativeMethod(Object o);
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abstract Object abstractMethod(Object o);
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static interface Interface {
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Object interfaceMethod(Object o);
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}
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static void propagateViaUnknownConstructorBad() {
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String source = (String) InferTaint.inferSecretSource();
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// we don't analyze the code for the core Java libraries, so this constructor will be unknown
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String unknownConstructor = new String(source);
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InferTaint.inferSensitiveSink(unknownConstructor);
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}
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static void propagateViaUnknownConstructorOk() {
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String unknownConstructor = new String("");
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InferTaint.inferSensitiveSink(unknownConstructor);
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}
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void propagateViaUnknownCodeOk(Interface i) {
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Object notASource = new Object();
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Object launderedSource1 = nativeMethod(notASource);
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Object launderedSource2 = abstractMethod(launderedSource1);
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Object launderedSource3 = i.interfaceMethod(launderedSource2);
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InferTaint.inferSensitiveSink(launderedSource3);
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}
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void callUnknownSetterBad(Intent i) {
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Object source = InferTaint.inferSecretSource();
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// we don't analyze the source code for Android, so this will be unknown
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i.writeToParcel((Parcel) source, 0);
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InferTaint.inferSensitiveSink(i);
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}
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void propagateEmptyBad() {
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String source = (String) InferTaint.inferSecretSource();
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StringBuffer buffer = new StringBuffer();
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buffer.append(source); // buffer is now tainted
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// even though "" is not tainted, buffer and alias should still be tainted
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StringBuffer alias = buffer.append("");
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InferTaint.inferSensitiveSink(buffer); // should report
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InferTaint.inferSensitiveSink(alias); // should report
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}
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void propagateFootprint(String param) {
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StringBuffer buffer = new StringBuffer();
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buffer.append(param);
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InferTaint.inferSensitiveSink(buffer);
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}
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void callPropagateFootprintBad() {
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propagateFootprint((String) InferTaint.inferSecretSource());
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}
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static void propagateViaInterfaceCodeBad(Interface i) {
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Object source = InferTaint.inferSecretSource();
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Object launderedSource = i.interfaceMethod(source);
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InferTaint.inferSensitiveSink(launderedSource);
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}
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void propagateViaUnknownNativeCodeBad() {
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Object source = InferTaint.inferSecretSource();
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Object launderedSource = nativeMethod(source);
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InferTaint.inferSensitiveSink(launderedSource);
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}
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static void propagateViaUnknownAbstractCodeBad() {
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Object source = InferTaint.inferSecretSource();
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Object launderedSource = nativeMethod(source);
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InferTaint.inferSensitiveSink(launderedSource);
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}
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}
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