/*
 * Copyright (c) 2016 - present Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

package codetoanalyze.java.quandary;

import com.facebook.infer.builtins.InferTaint;

/** making sure the traces we report respect control-flow */

class FlowSensitivity {

  static class Obj {
    Object f;
  }

  static void callSink(Obj o) {
    InferTaint.inferSensitiveSink(o.f);
  }

  static void returnSource(Obj o) {
    o.f = InferTaint.inferSecretSource();
  }

  static void interproceduralFlowSensitivityOk1(Obj o) {
    InferTaint.inferSensitiveSink(o.f);
    returnSource(o);
  }

  static void interproceduralFlowSensitivityOk2(Obj o) {
    callSink(o);
    o.f = InferTaint.inferSecretSource();
  }

  static void interproceduralFlowSensitivityOk3(Obj o) {
    callSink(o);
    returnSource(o);
  }

  static void interproceduralFlowSensitivityBad(Obj o) {
    returnSource(o);
    callSink(o);
  }

  static void sourceAndSink(Obj o) {
    InferTaint.inferSensitiveSink(o.f);
    o.f = InferTaint.inferSecretSource();
  }

  static void callSourceAndSinkOk(Obj o) {
    sourceAndSink(o);
  }

  static void callSourceAndSinkBad1(Obj o) {
    sourceAndSink(o);
    InferTaint.inferSensitiveSink(o.f);
  }

  static void callSourceAndSinkBad2(Obj o) {
    o.f = InferTaint.inferSecretSource();
    sourceAndSink(o);
  }

}