<div dir="ltr">Hi Steven Arzt,<div>I am also using Soot framework for creating and using Android application&#39;s call graph. </div><div>Can you help me in understanding which class should I use as main class?</div><div>For me callgraph.size() always returning 0.</div><div><br></div><div>I want to find a particular method invocation in all method bodies and backtrack (using edgesInto(method)) until I reach a method that is Android callback method.</div><div>I have a list to match the signatures with callback method.<br><br></div><div>Current problem is that the callgraph contains nothing.</div><div><br></div><div>I believe as you pointed here that I need to set a main class and entry point.</div><div>So should I make an Activity as a main class and onCreate() as entry point?</div><div><br></div><div>Please help in this regard.</div><div><br></div><div>Thank you!</div><div><br></div><div>Kind regards,</div><div>Anshul</div><div> </div><div><br>On Friday, 27 March 2015 11:15:00 UTC+1, Steven Arzt  wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;"><div lang="DE" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Hi Jason,</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">You should never need to call „loadClassAndSupport“ on your own. This is done internally by Soot.</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">For creating a callgraph, you need an entry point. For normal Java applications, this is the main() method. You can either explicitly specify it or have Soot automatically select the only main() method in your Soot classpath.</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">The easiest way to get a callgraph is to call the Soot main method and pass the correct command-line parameters:</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">                -p cg.spark on                   This enables SPARK</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">                -process-dir                  <wbr>     Path to the classes you want to analyze</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">                -cp                                        Path to other classes that might be referenced from your analysis target</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">                -main-class                   <wbr>     The main class to use</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">After the call to soot.Main.main(), you should be able to access the callgraph.</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">A more involved example that calls the required parts of Soot manually goes here:</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p><p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">       </span><b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#7f0055">public</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> </span><b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#7f0055">static</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> </span><b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#7f0055">void</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> main(String[] </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">args</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">) {</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             Options.<i>v</i>().parse(</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">args</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">);</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             Scene.<i>v</i>().<wbr>loadNecessaryClasses();</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             SootClass </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">sc</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> = Scene.<i>v</i>()</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">                           .forceResolve(</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#2a00ff">&quot;soot.Examples&quot;</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">, SootClass.</span><b><i><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#0000c0">BODIES</span></i></b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">);</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">sc</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">.setApplicationClass();</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             SootMethod </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">method</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> = </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">sc</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">.getMethodByName(</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#2a00ff">&quot;main&quot;</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">);</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             List&lt;SootMethod&gt; </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">entryPoints</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> = </span><b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#7f0055">new</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> ArrayList&lt;SootMethod&gt;();</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">entryPoints</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">.add(</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">method</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">);</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             Scene.<i>v</i>().setEntryPoints(</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">entry<wbr>Points</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">);</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             Options.<i>v</i>().set_main_class(</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">met<wbr>hod</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">.getSignature());</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"> </span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             PackManager.<i>v</i>().runPacks();</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"> </span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             CallGraph </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">callgraph</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> = Scene.<i>v</i>().getCallGraph();</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             System.</span><b><i><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#0000c0">out</span></i></b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">.println(</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#2a00ff">&quot;[<wbr>TestSpark] Call graph size &quot;</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> + </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">callgraph</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">.size());</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">             </span><b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#7f0055">for</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> (Edge </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">edge</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> : </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">callgraph</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">)</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">                    System.</span><b><i><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#0000c0">out</span></i></b><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">.println(</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#6a3e3e">edge</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black"> + </span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#2a00ff">&quot;&quot;</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">);</span><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"></span></p><p class="MsoNormal" style="text-autospace:none"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas"> </span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:black">       }</span><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">This is essentially what the normal Soot main method would do.</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Best regards,</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">  Steven</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">Von:</span></b><span style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> <a href="javascript:" target="_blank" gdf-obfuscated-mailto="ywbuN6mgL7YJ" rel="nofollow" onmousedown="this.href=&#39;javascript:&#39;;return true;" onclick="this.href=&#39;javascript:&#39;;return true;">soot-lis...@CS.McGill.CA</a> [mailto:<a href="javascript:" target="_blank" gdf-obfuscated-mailto="ywbuN6mgL7YJ" rel="nofollow" onmousedown="this.href=&#39;javascript:&#39;;return true;" onclick="this.href=&#39;javascript:&#39;;return true;">soot-lis...@CS.<wbr>McGill.CA</a>] <b>Im Auftrag von </b>Jason Ott<br><b>Gesendet:</b> Mittwoch, 25. März 2015 06:31<br><b>An:</b> <a href="javascript:" target="_blank" gdf-obfuscated-mailto="ywbuN6mgL7YJ" rel="nofollow" onmousedown="this.href=&#39;javascript:&#39;;return true;" onclick="this.href=&#39;javascript:&#39;;return true;">soot...@CS.McGill.CA</a><br><b>Betreff:</b> [Soot-list] Spark &amp; Android Source Code no main class</span></p><p class="MsoNormal"> </p><div><p class="MsoNormal">I would like to build a callgraph for each class of the android framework and I am struggling.  I haven&#39;t found much in the way of documentation or examples for using SPARK in general.</p><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">I have a basic program that does the following:</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">public class DumpClass {</p></div><div><p class="MsoNormal">public static void main(String[] args) {</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Scene.v().loadBasicClasses();</p></div><div><div><p class="MsoNormal">            SootClass mclass;</p></div></div><div><p class="MsoNormal">        mclass = Scene.v().loadClassAndSupport(<wbr>args[0]);</p></div><div><div><p class="MsoNormal">        mclass.setApplicationClass();</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">            Options.v().set_whole_program(<wbr>true);</p></div><div><p class="MsoNormal">            Options.v().setPhaseOption(&quot;<wbr>cg.spark&quot;, &quot;on&quot;);</p></div><div><p class="MsoNormal">            Scene.v().<wbr>loadNecessaryClasses();</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">            Options.v().set_main_class(<wbr>mclass.getMethods().get(0).<wbr>toString());</p></div><div><p class="MsoNormal">            PackManager.v().runPacks();</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">        new SparkTest(mclass);</p></div></div><div><p class="MsoNormal">    }</p></div><div><p class="MsoNormal">}</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Now, when I run this, I get: Exception in thread &quot;main&quot; java.lang.RuntimeException: There is no main class set!</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">I&#39;m not quite sure what to do with that or what to do next if this thing ever works.</p></div></div></div></div></blockquote></div></div>