PH29218: ANDROID APP CRASHES DUE TO ILLEGALACCESSERROR DURING LAUNCH

APAR status

• Closed as program error.

Error description

• Product components impacted: Android SDK
  Affected mobile development environments: Android
  Mobile Devices Operating Systems impacted: Android
  User roles impacted: End Users
  Distribution: Fix Central
  Versions affected: 8.0
  
  When an Android apk is protected using tools such as
  Arxan, the app might crash during launch with the following
  exception :
  java.lang.IllegalAccessError.
  
  This crash occurs due to the way Arxan intercepts the operating
  system level operations performed by the Mobile Foundation
  libraries. Specifically the use of Arxan prevents the Mobile
  Foundation Android SDK to be unable to deserialize previously
  serialized data which results in the app crash. The following is
  the stack trace when the app crashes
  
  java.lang.
  IllegalAccessError
  java.lang.IllegalAccessError :
  at
  com.worklight.wlclient.cookie.SharedPrefsCookiePersistor.loadAll
  :()Ljava/util/List;
  at
  com.worklight.wlclient.cookie.PersistentCookieJar.<init>:(Lcom/w
  orklight/wlclient/cookie/CookieCache;Lcom/worklight/wlclient/coo
  kie/CookiePersistor;
  at
  com.worklight.wlclient.HttpClientManager.<init>:(Landroid/conten
  t/Context;
  at
  com.worklight.wlclient.HttpClientManager.createInstance:(Landroi
  d/content/Context;
  at
  com.worklight.common.Logger.setContext:(Landroid/content/Context
  ;
  at
  com.worklight.androidgap.api.WL.<init>:(Landroid/content/Context
  ;
  at
  com.worklight.androidgap.api.WL.VBs-StaticWrapper(I[Ljava/lang/O
  bject;)Ljava/lang/Object;"
  at com.ibm.MFPApplication.onCreate (MFPApplication.java: 21)
  at android.app. Instrumentation.callApplicationOnCreate
  (Instrumentation . java: 1189)
  at android.app.ActivityThread.handleBindApplication
  (ActivityThread. java : 6591 )
  at android.app.ActivityThread.access$1500 (ActivityThread . java
  : 230)
  at android .app.ActivityThread$H.handleMessage(ActivityThread .
  java : 1911 )
  at android.os.Handler.dispatchMessage (Handler. java : 107)
  at android.os.Looper.loop (Looper.java:224)
  at android.app.ActivityThread.main (ActivityThread.java:7551)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run
  (RuntimeInit .java: 539)
  

Local fix

• Uninstall and re-install app
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Developers using the Mobile Foundation Android SDK along     *
  * with third party app protection tools such as Arxan          *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * When Android apk is protected using the third party tool     *
  * Arxan, the app might crash during launch with an exception : *
  * java.lang.IllegalAccessError.                                *
  *                                                              *
  * This crash has occurred due to Arxan intercepting the        *
  * operating system level calls made by the Mobile Foundation   *
  * SDK which causes a loss of data integrity. Serialized data   *
  * stored by the Mobile Foundation libraries are not            *
  * deserialized correctly when the app is protected with Arxan. *
  * This APAR handles the error condition gracefully instead of  *
  * resulting in the app crashing.                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Include below classes in obfuscating rules :                 *
  *                                                              *
  * MFPApplication.java -  com.ibm                               *
  *                                                              *
  *  WL.java - com.worklight.androidgap.api                      *
  *                                                              *
  *  HttpClientManager.java - com.worklight.wlclient             *
  *                                                              *
  *  WLPersistentCookie.java - com.worklight.wlclient.cookie     *
  *                                                              *
  *  SetCookieCache.java - com.worklight.wlclient.cookie         *
  *                                                              *
  *  CookieCache.java - com.worklight.wlclient.cookie            *
  *                                                              *
  *  SharedPrefsCookiePersistor.java -                           *
  * com.worklight.wlclient.cookie                                *
  *                                                              *
  *  CookiePersistor.java - com.worklight.wlclient.cookie        *
  *                                                              *
  *  PersistentCookieJar.java - com.worklight.wlclient.cookie    *
  *                                                              *
  *  ClearableCookieJar.java - com.worklight.wlclient.cookie     *
  *                                                              *
  *  SerializableCookie.java - com.worklight.wlclient.cookie     *
  *                                                              *
  *  Serializable.java - java.io                                 *
  ****************************************************************
  

Problem conclusion

• Problem has been fixed in MFP SDK to avoid crash
  

Temporary fix

• Uninstall and reinstall app
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  MOBILE1ST PLATF

• Fixed component ID

  5725I4301

Applicable component levels