Conflict with React Native in v2.0.2

[LinusU]

Similar to #102 and #196, there is a conflict in the 2.0.2 version as well:

Dex: Error converting bytecode to dex:
Cause: com.android.dex.DexException: Multiple dex files define Lcom/facebook/jni/Countable;
    UNEXPECTED TOP-LEVEL EXCEPTION:
    com.android.dex.DexException: Multiple dex files define Lcom/facebook/jni/Countable;
        at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:661)
        at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:616)
        at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:598)
        at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:171)
        at com.android.dx.merge.DexMerger.merge(DexMerger.java:198)
        at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:506)
        at com.android.dx.command.dexer.Main.runMonoDex(Main.java:336)
        at com.android.dx.command.dexer.Main.runDx(Main.java:291)
        at com.android.dx.command.dexer.Main.main(Main.java:247)
        at com.android.dx.command.Main.main(Main.java:94)

Seems like both conceal and react-native is defining com.facebook.jni.Countable.

Would be happy to submit a pull request if someone can guide me to what the proper fix is ☺️

[LinusU]

Currently using a very annoying workaround where I strip the duplicated classes from the aar file, and then include it as a local dependency:

# Download original
curl http://central.maven.org/maven2/com/facebook/conceal/conceal/2.0.2/conceal-2.0.2.aar > conceal-2.0.2.aar

# Unpack aar
unzip conceal-2.0.2.aar -d temp-folder

# Strip duplicate so files
rm jni/*/libfb.so

# Unpack classes
cd temp-folder
unzip classes.jar -d temp-folder

# Strip duplicate classes
rm -r temp-folder/com/facebook/{jni,proguard,soloader}

# Pack classes
jar cvf classes.jar -C temp-folder/ .
rm -r temp-folder

# Pack aar
cd ..
jar cvf conceal-2.0.2-stripped.aar -C temp-folder/ .
rm -r temp-folder

[OleksandrKucherenko]

configurations {
  repack { transitive = false }
}

ext.concealVersion = "2.0.2"

dependencies {
  /* https://github.com/facebook/conceal/releases */
  repack "com.facebook.conceal:conceal:${concealVersion}"
}

task repackConcealv2(dependsOn: configurations.repack) {
  def generation = "${project.buildDir}/intermediates/repack"
  def conceal = "com.facebook.conceal@${concealVersion}"
  def destination = "${generation}/${conceal}"

  doLast {
    copy {
      from { zipTree(configurations.repack.singleFile) }
      into "${destination}"
    }

    copy {
      from zipTree("${destination}/classes.jar")
      into "${destination}/classes"
    }
  }

  task recreateConcealAarv2(type: Zip) {
    archiveFileName = "com.facebook.conceal-${concealVersion}-patched.aar"
    destinationDirectory = file("${generation}")
    from("${destination}") {
      exclude '**/jni/*/libfb.so'
      exclude '**/classes'
      exclude 'classes.jar'
      rename('classes-patched.jar', 'classes.jar')
    }
  }

  task recreateConcealClassesJarv2(type: Zip) {
    archiveFileName = "classes-patched.jar"
    destinationDirectory = file("${destination}")
    from("${destination}/classes") {
      exclude '**/facebook/jni/'
      exclude '**/facebook/proguard/'
      exclude '**/facebook/soloader/'
    }

    finalizedBy recreateConcealAarv2
  }

  finalizedBy recreateConcealClassesJarv2
}

preBuild.dependsOn(repackConcealv2)

dependencies {
  implementation fileTree(dir: "${project.buildDir}/intermediates/repack", include: ["*-patched.aar"])
}

Outputs:

.
├── com.facebook.conceal-2.0.2-patched.aar
└── com.facebook.conceal@2.0.2
    ├── AndroidManifest.xml
    ├── aidl
    ├── assets
    ├── classes
    │   └── com
    │       └── facebook
    │           ├── android
    │           │   └── crypto
    │           │       └── keychain
    │           │           ├── AndroidConceal.class
    │           │           ├── AndroidCryptoLibrary.class
    │           │           ├── SecureRandomFix$LinuxPRNGSecureRandom.class
    │           │           ├── SecureRandomFix$LinuxPRNGSecureRandomProvider.class
    │           │           ├── SecureRandomFix$LocalSecureRandom.class
    │           │           ├── SecureRandomFix.class
    │           │           └── SharedPrefsBackedKeyChain.class
    │           ├── cipher
    │           │   ├── Cipher$DecryptStream.class
    │           │   ├── Cipher$EncryptStream.class
    │           │   ├── Cipher.class
    │           │   ├── IntegrityException.class
    │           │   ├── Mac$DecryptStream.class
    │           │   ├── Mac$EncryptStream.class
    │           │   ├── Mac.class
    │           │   └── jni
    │           │       ├── CipherHybrid.class
    │           │       ├── DecryptHybrid.class
    │           │       ├── EncryptHybrid.class
    │           │       ├── MacDecoderHybrid.class
    │           │       ├── MacEncoderHybrid.class
    │           │       └── PBKDF2Hybrid.class
    │           ├── crypto
    │           │   ├── BuildConfig.class
    │           │   ├── CheckedKeyChain.class
    │           │   ├── Conceal.class
    │           │   ├── Crypto.class
    │           │   ├── CryptoConfig.class
    │           │   ├── Entity.class
    │           │   ├── MacConfig.class
    │           │   ├── VersionCodes.class
    │           │   ├── exception
    │           │   │   ├── CryptoInitializationException.class
    │           │   │   └── KeyChainException.class
    │           │   ├── keychain
    │           │   │   └── KeyChain.class
    │           │   ├── keygen
    │           │   │   └── PasswordBasedKeyDerivation.class
    │           │   ├── proguard
    │           │   │   └── annotations
    │           │   │       ├── DoNotStrip.class
    │           │   │       ├── InternalBuildOnly.class
    │           │   │       └── KeepGettersAndSetters.class
    │           │   ├── streams
    │           │   │   ├── BetterCipherInputStream.class
    │           │   │   └── TailInputStream.class
    │           │   └── util
    │           │       ├── Assertions.class
    │           │       ├── NativeCryptoLibrary.class
    │           │       └── SystemNativeCryptoLibrary.class
    │           ├── jni
    │           │   ├── Countable.class
    │           │   ├── CpuCapabilitiesJni.class
    │           │   ├── DestructorThread$1.class
    │           │   ├── DestructorThread$Destructor.class
    │           │   ├── DestructorThread$DestructorList.class
    │           │   ├── DestructorThread$DestructorStack.class
    │           │   ├── DestructorThread$Terminus.class
    │           │   ├── DestructorThread.class
    │           │   ├── HybridClassBase.class
    │           │   ├── HybridData$Destructor.class
    │           │   ├── HybridData.class
    │           │   ├── IteratorHelper.class
    │           │   ├── JniTerminateHandler.class
    │           │   ├── MapIteratorHelper.class
    │           │   ├── NativeRunnable.class
    │           │   └── ThreadScopeSupport.class
    │           ├── proguard
    │           │   └── annotations
    │           │       ├── DoNotStrip.class
    │           │       └── KeepGettersAndSetters.class
    │           └── soloader
    │               ├── Api18TraceUtils.class
    │               ├── ApkSoSource$ApkUnpacker.class
    │               ├── ApkSoSource.class
    │               ├── DirectorySoSource.class
    │               ├── DoNotOptimize.class
    │               ├── Elf32_Dyn.class
    │               ├── Elf32_Ehdr.class
    │               ├── Elf32_Phdr.class
    │               ├── Elf32_Shdr.class
    │               ├── Elf64_Dyn.class
    │               ├── Elf64_Ehdr.class
    │               ├── Elf64_Phdr.class
    │               ├── Elf64_Shdr.class
    │               ├── ExoSoSource$1.class
    │               ├── ExoSoSource$ExoUnpacker$FileBackedInputDsoIterator.class
    │               ├── ExoSoSource$ExoUnpacker.class
    │               ├── ExoSoSource$FileDso.class
    │               ├── ExoSoSource.class
    │               ├── ExtractFromZipSoSource$1.class
    │               ├── ExtractFromZipSoSource$ZipDso.class
    │               ├── ExtractFromZipSoSource$ZipUnpacker$ZipBackedInputDsoIterator.class
    │               ├── ExtractFromZipSoSource$ZipUnpacker.class
    │               ├── ExtractFromZipSoSource.class
    │               ├── FileLocker.class
    │               ├── MergedSoMapping.class
    │               ├── MinElf$ElfError.class
    │               ├── MinElf.class
    │               ├── NativeLibrary.class
    │               ├── NoopSoSource.class
    │               ├── SoFileLoader.class
    │               ├── SoLoader$1.class
    │               ├── SoLoader$Api14Utils.class
    │               ├── SoLoader$WrongAbiError.class
    │               ├── SoLoader.class
    │               ├── SoSource.class
    │               ├── SysUtil$LollipopSysdeps.class
    │               ├── SysUtil.class
    │               ├── SystemLoadLibraryWrapper.class
    │               ├── UnpackingSoSource$1.class
    │               ├── UnpackingSoSource$Dso.class
    │               ├── UnpackingSoSource$DsoManifest.class
    │               ├── UnpackingSoSource$InputDso.class
    │               ├── UnpackingSoSource$InputDsoIterator.class
    │               ├── UnpackingSoSource$Unpacker.class
    │               └── UnpackingSoSource.class
    ├── classes-patched.jar
    ├── classes.jar
    ├── jni
    │   ├── arm64-v8a
    │   │   ├── libconcealjni.so
    │   │   └── libfb.so
    │   ├── armeabi
    │   │   ├── libconcealjni.so
    │   │   └── libfb.so
    │   ├── armeabi-v7a
    │   │   ├── libconcealjni.so
    │   │   └── libfb.so
    │   ├── x86
    │   │   ├── libconcealjni.so
    │   │   └── libfb.so
    │   └── x86_64
    │       ├── libconcealjni.so
    │       └── libfb.so
    ├── libs
    └── res

[Kranthi94]

Any Update on this..?

[Kranthi94]

@OleksandrKucherenko , I followed your approach but after that native library loading is failing.
Throwing "libconcealjni.so" file is not found. Did you face any such issue..?

[OleksandrKucherenko]

Throwing "libconcealjni.so" file is not found. Did you face any such issue..?

Yes, I saw that before... it happens due to the not properly found @aar file.

The workaround is to divide the build process into two steps:

• repack and compose a patched aar
• copy patched aar into project folder and include it directly (issue is in gradle android plugin that cannot recognize aar archive, it only understands well JARs)

[Kranthi94]

We had patched the aar according to @LinusU. But still facing the error. By the way, we are using conceal 2.0.2