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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Yury,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">You can read up on the concept of library classes vs. application classes here:
<a href="https://github.com/Sable/soot/wiki/Introduction:-Soot-as-a-command-line-tool">
https://github.com/Sable/soot/wiki/Introduction:-Soot-as-a-command-line-tool</a>. The whole article is a bit dated and focuses on Java, not Android, but the concepts are still pretty much the same aside from the usual surprise here and there.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><br>
For the callgraph, you have hit a more substantial issue. Soot’s callgraph algorithms start from an entry point. For a Java program, that is the main() method. Android apps, on the other hand, do not have a main() method. Consequently, there is nothing the
callgraph builder could work on (aside from some special cases such as JVM handlers, etc.) To solve this problem, you can use FlowDroid to construct a dummy main() method for you. This dummy main method() is equivalent to a pseudo-implementation of the Android
OS for the special case of callgraph construction. It is not executable, it is just good enough to tell the callgraph builder when which method from the app’s individual components are called and in which context. If you want to read up on the details, it’s
in my PhD thesis: <a href="http://tuprints.ulb.tu-darmstadt.de/5937/7/Thesis.pdf">
http://tuprints.ulb.tu-darmstadt.de/5937/7/Thesis.pdf</a>, section 4.15 and pretty much all of section 5. If you just want to get something that works, download soot-infoflow and soot-infoflow-android from Github and try this:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">public</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">static</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">void</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black"> main(String[]
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">args</span><span style="font-size:10.0pt;font-family:Consolas;color:black">)
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">throws</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black"> IOException, XmlPullParserException {</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:#3F7F5F">// Initialize Soot</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> SetupApplication
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">analyzer</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> =
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">new</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black"> SetupApplication(</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"C:\\Program
Files (x86)<a href="file://Android/android-sdk/platforms">\\Android\\android-sdk\\platforms</a>"</span><span style="font-size:10.0pt;font-family:Consolas;color:black">,</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"D:/org.fdroid.k9_17046.apk"</span><span style="font-size:10.0pt;font-family:Consolas;color:black">);</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">analyzer</span><span style="font-size:10.0pt;font-family:Consolas;color:black">.getConfig().setTaintAnalysisEnabled(</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">false</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black">);</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">analyzer</span><span style="font-size:10.0pt;font-family:Consolas;color:black">.<u>calculateSourcesSinksEntrypoints</u>(Collections.<i>emptySet</i>(), Collections.<i>emptySet</i>());</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">analyzer</span><span style="font-size:10.0pt;font-family:Consolas;color:black">.<u>runInfoflow</u>();</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas;color:#3F7F5F">// Iterate over the
<u>callgraph</u></span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><b><span style="font-size:10.0pt;font-family:Consolas;color:#7F0055">for</span></b><span style="font-size:10.0pt;font-family:Consolas;color:black"> (Iterator<Edge>
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">edgeIt</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> = Scene.<i>v</i>().getCallGraph().iterator();
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">edgeIt</span><span style="font-size:10.0pt;font-family:Consolas;color:black">.hasNext(); ) {</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> Edge
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">edge</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> =
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">edgeIt</span><span style="font-size:10.0pt;font-family:Consolas;color:black">.next();</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> SootMethod
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">smSrc</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> =
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">edge</span><span style="font-size:10.0pt;font-family:Consolas;color:black">.src();</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> Unit
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">uSrc</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> =
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">edge</span><span style="font-size:10.0pt;font-family:Consolas;color:black">.srcStmt();</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> SootMethod
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">smDest</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> =
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">edge</span><span style="font-size:10.0pt;font-family:Consolas;color:black">.tgt();</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black">
</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> System.</span><b><i><span style="font-size:10.0pt;font-family:Consolas;color:#0000C0">out</span></i></b><span style="font-size:10.0pt;font-family:Consolas;color:black">.println(</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">"Edge
from "</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> + </span>
<span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">uSrc</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> +
</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">" in "</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> +
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">smSrc</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> +
</span><span style="font-size:10.0pt;font-family:Consolas;color:#2A00FF">" to "</span><span style="font-size:10.0pt;font-family:Consolas;color:black"> +
</span><span style="font-size:10.0pt;font-family:Consolas;color:#6A3E3E">smDest</span><span style="font-size:10.0pt;font-family:Consolas;color:black">);</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> }</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:Consolas;color:black"> }</span><span style="font-size:10.0pt;font-family:Consolas"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">That should give you a fairly complete callgraph of the app. There are various knobs you can turn here and there to make trade-offs between precision, completeness,
and performance if you need to. The full story is in my PhD thesis. The most important option is probably whether you want the callbacks to be included or not. Analyzing the callbacks is the process that takes most of the time. The configuration object (returned
by getConfig()) has an option setEnableCallbacks() for that.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> Steven<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Dr. Yury Zhauniarovich [mailto:yzhauniarovich@hbku.edu.qa]
<br>
<b>Sent:</b> Tuesday, February 28, 2017 12:27 PM<br>
<b>To:</b> Arzt, Steven <steven.arzt@sit.fraunhofer.de>; loscoccia@gmail.com<br>
<b>Cc:</b> soot-list@cs.mcgill.ca<br>
<b>Subject:</b> Re: [Soot-list] Soot cannot get the body and the callers of the overloaded method<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Steven,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">You were right. retrieveActiveBody() does the trick even without addBasicClass() method. However, the set of calling methods is still empty for the second case. Can you please point me what optimizations should I disable in order to list
all methods that call second <span style="font-size:9.0pt;font-family:Consolas;color:#333333;background:#F7F7F7">addService method (now I obtain an empty set)?</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">One more question, is there any source where I can read about these optimizations, besides the sources of Soot:)?<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Thank you in advance! <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Consolas;color:#333333;background:#F7F7F7"> </span> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">-- <o:p></o:p></p>
<div>
<p class="MsoNormal">Best Regards,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Yury Zhauniarovich<o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">On Tue, 2017-02-28 at 10:37 +0000, Arzt, Steven wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hu Yury,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Did you add the addBasicClass() call before calling loadNecessaryClasses()? Did you try retrieveActiveBody() instead of getActiveBody()?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The problem is most likely not with overloads, but with on-demand loading. As I wrote, Soot only loads what is ultimately necessary. That means, if the callgraph
algorithm, for example, accesses some overload A of the method, but not some other overload B, it will only load A’s body, and not the one of B, even though both are overloads of the same method. What you need to do is tell Soot that you want the respective
body anyway.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> Steven<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Dr. Yury Zhauniarovich [</span><a href="mailto:yzhauniarovich@hbku.edu.qa"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">mailto:yzhauniarovich@hbku.edu.qa</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">]
<br>
<b>Sent:</b> Tuesday, February 28, 2017 11:29 AM<br>
<b>To:</b> Arzt, Steven <</span><a href="mailto:steven.arzt@sit.fraunhofer.de"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">steven.arzt@sit.fraunhofer.de</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">>;
</span><a href="mailto:loscoccia@gmail.com"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">loscoccia@gmail.com</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><br>
<b>Cc:</b> </span><a href="mailto:soot-list@cs.mcgill.ca"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">soot-list@cs.mcgill.ca</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><br>
<b>Subject:</b> Re: [Soot-list] Soot cannot get the body and the callers of the overloaded method<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Hi Gian Luca, Steven,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">First of all, thank you for your tips. Gian Luca,<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal">Where did you get the android framework files? Keep in mind that those that those that come with Flowdroid (<a href="https://github.com/secure-software-engineering/soot-infoflow-android">https://github.com/secure-software-engineering/soot-infoflow-android</a>)
only contain stubs/summaries of many methods. You have to get your own android jar files.<o:p></o:p></p>
</div>
</blockquote>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">To get the corresponding jar and dex filex I've build Android, so I know that they contain all the information inside.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Steven, I've added the following code into my app:<o:p></o:p></p>
</div>
<div>
<div>
<p class="MsoNormal">SootClass clz = Scene.v().getSootClass("android.os.ServiceManager");<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">System.out.println("IsPhantom: " + clz.isPhantom());<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">System.out.println("Resolving Level: " + clz.resolvingLevel());<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">The output is the following:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">IsPhantom: false<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Resolving Level: 3<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">It seems that the output is the one that you've assumed. However, the error is still there. Moreover, this does not explains why I get the correct data for the first method, but not for the second <b>overloaded</b> method. I guess there
maybe a bug in Soot dealing with the overloaded methods.<o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">-- <o:p></o:p></p>
<div>
<p class="MsoNormal">Best Regards,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Yury Zhauniarovich<o:p></o:p></p>
</div>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">On Tue, 2017-02-28 at 09:54 +0000, Arzt, Steven wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Yuri,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">There are several possible explanations for the behavior you encounter. One is that Soot didn’t actually find the class. Can you check whether the class ServiceManager
is a phantom, i.e., isPhantom() returns true on the SootClass? If that is the case, the class is probably missing from the JAR file you are using.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">An alternative explanation would be that the class is there, but is not loaded. The easiest solution would be to do something like this right before you call
loadNecessaryClasses():<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> Scene.v().addBasicClass(“android.os.ServiceManager”, SootClass.BODIES);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">That line tells Soot to load this class and all method bodies inside it, even if would normally be excluded for some reason. To see whether a class was loaded
(and to which extent), check the “resolvingLevel” property of the SootClass. You need level 3 (=SootClass.BODIES) to be able to have bodies. Since method bodies are loaded on demand, you might have level 3 and no bodies in some cases. In that case, SootMethod.retrieveActiveBody()
should do the trick. That might all sound complex at first, but the core idea is that Soot only loads what is ultimately necessary to improve speed and reduce memory pressure.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> Steven<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Soot-list [</span><a href="mailto:soot-list-bounces@cs.mcgill.ca"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">mailto:soot-list-bounces@cs.mcgill.ca</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">]
<b>On Behalf Of </b>Gian Luca Scoccia<br>
<b>Sent:</b> Tuesday, February 28, 2017 10:44 AM<br>
<b>To:</b> Dr. Yury Zhauniarovich <</span><a href="mailto:yzhauniarovich@hbku.edu.qa"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">yzhauniarovich@hbku.edu.qa</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">><br>
<b>Cc:</b> </span><a href="mailto:soot-list@CS.McGill.CA"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">soot-list@CS.McGill.CA</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><br>
<b>Subject:</b> Re: [Soot-list] Soot cannot get the body and the callers of the overloaded method<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Where did you get the android framework files? Keep in mind that those that those that come with Flowdroid (<a href="https://github.com/secure-software-engineering/soot-infoflow-android">https://github.com/secure-software-engineering/soot-infoflow-android</a>)
only contain stubs/summaries of many methods. You have to get your own android jar files.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">2017-02-28 8:26 GMT+01:00 Dr. Yury Zhauniarovich <<a href="mailto:yzhauniarovich@hbku.edu.qa" target="_blank">yzhauniarovich@hbku.edu.qa</a>>:<o:p></o:p></p>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal">Dear community,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I faced with a problem and do not know how to solve an issue and what is its cause. I would be glad if someone can point me for a direction.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I have the following issue with Soot. I try to analyze the Android framework files. In particular, I would like to find all places in the code where system services are added, the corresponding method signatures are defined in the smAddMethodSignatures
array (see the code in the end).<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">When I ran the following code, I am able to find the callers and the body of the method for the first signature but not for the second. For the second signature, the active body is an empty string, and there are no caller, although from
the sources it is obvious that such methods exist. Here is the error when I try to get active body:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<pre style="margin-bottom:12.0pt;background:#F7F7F7;box-sizing:border-box;word-wrap:normal;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;overflow:auto"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">Exception in thread "main" java.lang.RuntimeException: no active body present for method <android.os.ServiceManager: void addService(java.lang.String,android.os.IBinder,boolean)><o:p></o:p></span></code></pre>
<pre style="margin-bottom:12.0pt;background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> at soot.SootMethod.getActiveBody(SootMethod.java:323)<o:p></o:p></span></code></pre>
<pre style="margin-bottom:12.0pt;background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> at com.tmp.BAnalysisApp.getRegisteredServicesClasses(BAnalysisApp.java:85)<o:p></o:p></span></code></pre>
<pre style="margin-bottom:12.0pt;background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> at com.tmp.BAnalysisApp.main(BAnalysisApp.java:47)</span></code><o:p></o:p></pre>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I am a novice with Soot, and I may miss something. However, it seems to me that there is a bug in Soot analyzing overloaded methods. I also filled an issue in the tracker with a pretty 700 number: <a href="https://github.com/Sable/soot/issues/700" target="_blank">https://github.com/Sable/soot/issues/700</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Here is the code of an MWE that I use:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<pre style="background:#F7F7F7;box-sizing:border-box;word-wrap:normal;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;overflow:auto"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">import java.util.Collections;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">import java.util.Iterator;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">import java.util.List;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"><o:p> </o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">import soot.PackManager;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">import soot.Scene;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">import soot.SootClass;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">import soot.SootMethod;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">import soot.jimple.toolkits.callgraph.CallGraph;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">import soot.jimple.toolkits.callgraph.Edge;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">import soot.options.Options;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"><o:p> </o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">public class BAnalysisApp {<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> private final static String SERVICES_DEX_DIR_PATH = "/home/yury/tmp/tmp_services/";<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> private final static String ANDROID_BOOT_JAR_PATH = "/home/yury/tmp/android-boot-25.jar";<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"><o:p> </o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> // searched method signatures<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> // public static void addService(String name, IBinder service)<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> // public static void addService(String name, IBinder service, boolean allowIsolated)<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> private final static String[] smAddMethodSignatures = {<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> "<android.os.ServiceManager: void addService(java.lang.String,android.os.IBinder)>",<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> "<android.os.ServiceManager: void addService(java.lang.String,android.os.IBinder,boolean)>" };<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"><o:p> </o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> public static void main(String[] args) {<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> prepareSoot();<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> List<SootClass> registeredServices = getRegisteredServicesClasses();<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> }<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"><o:p> </o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> private static void prepareSoot() {<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> soot.G.reset();<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Options.v().set_src_prec(Options.src_prec_apk);<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Options.v().set_process_dir(Collections.singletonList(SERVICES_DEX_DIR_PATH));<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Options.v().set_process_multiple_dex(true);<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Options.v().set_force_android_jar(ANDROID_BOOT_JAR_PATH);<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Options.v().set_whole_program(true);<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Options.v().set_allow_phantom_refs(true);<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Options.v().set_output_format(Options.output_format_none);<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Options.v().setPhaseOption("cg.spark", "on");<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Scene.v().loadNecessaryClasses();<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> PackManager.v().runPacks();<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> }<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"><o:p> </o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> private static List<SootClass> getRegisteredServicesClasses() {<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> final CallGraph cg = Scene.v().getCallGraph();<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> for (String mthSig : smAddMethodSignatures) {<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> SootMethod smAddServiceMth = Scene.v().grabMethod(mthSig);<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> System.out.println(mthSig);<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> //printing the body<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> System.out.println(smAddServiceMth.getActiveBody().toString());<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> //iterating over the caller methods<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Iterator<Edge> edgeIterator = cg.edgesInto(smAddServiceMth);<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> while (edgeIterator.hasNext()) {<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> Edge mtdEdge = edgeIterator.next();<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> SootMethod srcMtd = mtdEdge.src();<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> System.out.println(srcMtd.getSignature());<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> System.out.println(mtdEdge.srcStmt().toString());<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> }<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> }<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> return null;<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in"> }<o:p></o:p></span></code></pre>
<pre style="background:#F7F7F7"><code><span style="font-size:9.0pt;font-family:Consolas;color:#333333;border:none windowtext 1.0pt;padding:0in">}</span></code><o:p></o:p></pre>
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