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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Raikin,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The Infoflow class supports the setPathAgnosticResults() method. The default is “true” which means that paths which have same source and sink are merged into one. If you set it to “false”, you will get the two different paths. However, beware: In general, the number of propagation paths is exponential in the number of branching statements on the way. You can quickly end up with an infeasible number of paths and that’s why the default merges all these paths.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Best regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> Steven<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> </span><span style='font-size:10.0pt;font-family:"PMingLiU","serif"'>润青杨</span><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> [mailto:rainkin1993@gmail.com] <br><b>Gesendet:</b> Mittwoch, </span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>22. April 2015 11:26<br><b>An:</b> Steven Arzt<br><b>Cc:</b> soot-list@cs.mcgill.ca<br><b>Betreff:</b> Re: [Soot-list] How to get context-sensitive result of flowdroid<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><div><p class=MsoNormal>HI Steven,<o:p></o:p></p></div><p class=MsoNormal> Two different propagation paths are what I want. But the result only have 1 path;<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'> Can you tell me how to get it?<o:p></o:p></p></div><p class=MsoNormal>Thanks,<o:p></o:p></p></div><p class=MsoNormal>Rainkin<o:p></o:p></p><div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>2015-04-22 17:00 GMT+08:00 Steven Arzt <<a href="mailto:Steven.Arzt@cased.de" target="_blank">Steven.Arzt@cased.de</a>>:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Rainkin,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I do not understand your question. In this code example, there is only a single context. The method “foo” is always called with a tainted element which originated from sourceOne(10). In terms of contexts, the two source-to-sink connections are equal. Moreover, there is only one call to “System.out.println()” in the code, so I’m not sure how you want to get two different statements out of that.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The only thing you could do is to obtain two different propagation paths to record that one flow was propagated over the first call to “foo” and the other one over the second call. I’m not sure what the use case for that should be, though.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Best regards,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> Steven</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a href="mailto:soot-list-bounces@CS.McGill.CA" target="_blank">soot-list-bounces@CS.McGill.CA</a> [mailto:<a href="mailto:soot-list-bounces@CS.McGill.CA" target="_blank">soot-list-bounces@CS.McGill.CA</a>] <b>Im Auftrag von </b>???<br><b>Gesendet:</b> Mittwoch, 22. April 2015 10:50<br><b>An:</b> <a href="mailto:soot-list@CS.McGill.CA" target="_blank">soot-list@CS.McGill.CA</a><br><b>Betreff:</b> [Soot-list] How to get context-sensitive result of flowdroid</span><o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hi guys,<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> this is a example:<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> public void test(){<br> String sourceOne = sourceOne(10); // source<br> foo(sourceOne);<br> foo(sourceOne);<br> }<br><br> public String sourceOne(int number){<br> return number>0 ? "positive" : "negative";<br> }<br> <br> public void foo(String s){<br> System.out.println(s); // sink<br> }<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'> the method sourceOne is a source and System.out.println() is a sink.<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> After analysis, I get the following result:<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>[main] INFO soot.jimple.infoflow.Infoflow - Source lookup done, found 1 sources and 1 sinks.<br>[main] INFO soot.jimple.infoflow.Infoflow - IFDS problem with 14 forward and 0 backward edges solved, processing 1 results...<br>[main] INFO soot.jimple.infoflow.data.pathBuilders.ContextSensitivePathBuilder - Context-sensitive path reconstructor started<br>[main] INFO soot.jimple.infoflow.data.pathBuilders.ContextSensitivePathBuilder - Obtainted 1 connections between sources and sinks<br>[main] INFO soot.jimple.infoflow.data.pathBuilders.ContextSensitivePathBuilder - Building path 1<br>[main] INFO soot.jimple.infoflow.data.pathBuilders.ContextSensitivePathBuilder - Path processing took 0.008987293 seconds in total<br>[main] INFO soot.jimple.infoflow.Infoflow - The sink virtualinvoke $r2.<java.io.PrintStream: void println(java.lang.String)>(r1) in method <TestCode: void foo(java.lang.String)> was called with values from the following sources:<br>[main] INFO soot.jimple.infoflow.Infoflow - - r1 = virtualinvoke r0.<TestCode: java.lang.String sourceOne(int)>(10) in method <TestCode: void test()><br>[main] INFO soot.jimple.infoflow.Infoflow - on Path: <br>[main] INFO soot.jimple.infoflow.Infoflow - -> <TestCode: void foo(java.lang.String)><br>[main] INFO soot.jimple.infoflow.Infoflow - -> virtualinvoke $r2.<java.io.PrintStream: void println(java.lang.String)>(r1)<o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'> I want to know how to get a context-sensitive result, in which sourceOne() will point to 2 different system.out.println()<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thx,<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Rainkin<o:p></o:p></p></div></div></div></div></div></div></div><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>