revealing assets

Author: efraespada

app/build.gradle

@@ -11,7 +11,7 @@ android {
 
     defaultConfig {
         applicationId "com.efraespada.stringobfuscator"
-        minSdkVersion 14
+        minSdkVersion 15
         targetSdkVersion 28
         versionCode 1
         versionName "1.0"
@@ -57,7 +57,8 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     implementation project(path: ':library')
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    // implementation "com.stringcare:library:$stringcare_version"
+    implementation 'commons-io:commons-io:2.5'
+// implementation "com.stringcare:library:$stringcare_version"
 }
 
 

app/src/main/assets/raw/test_array.json

@@ -0,0 +1,10 @@
+[
+  {
+    "user": "user123",
+    "message": "hello world"
+  },
+  {
+    "user": "user456",
+    "message": "hello there"
+  }
+]

app/src/main/java/com/efraespada/stringobfuscator/MainActivity.java

@@ -2,12 +2,16 @@
 
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
 import android.widget.TextView;
 
 import com.stringcare.library.SC;
 import com.stringcare.library.SCTextView;
 import com.stringcare.library.Version;
 
+import org.json.JSONArray;
+import org.json.JSONObject;
+
 public class MainActivity extends AppCompatActivity {
 
     @Override
@@ -42,5 +46,15 @@ protected void onCreate(Bundle savedInstanceState) {
         boolean equals = SC.reveal(R.string.hello_world_b).equals(getString(R.string.hello_world_a));
         String areEquals = "Same result: " +  equals;
         ((TextView) findViewById(R.id.same_value)).setText(areEquals);
+
+        JSONObject jsonObject = SC.jsonObjectAsset("test.json");
+        SC.jsonObjectAssetAsync("test.json", json -> {
+            String value = json.toString();
+        });
+
+        JSONArray jsonArray = SC.jsonArrayAsset("raw/test_array.json");
+        SC.jsonArrayAssetAsync("raw/test_array.json", json -> {
+            String value = json.toString();
+        });
     }
 }

library/build.gradle

@@ -11,7 +11,7 @@ android {
     buildToolsVersion '28.0.3'
 
     defaultConfig {
-        minSdkVersion 14
+        minSdkVersion 15
         targetSdkVersion 28
         versionCode 4
         versionName version
@@ -46,6 +46,7 @@ dependencies {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
     implementation 'com.android.support:appcompat-v7:28.0.0'
+    implementation 'org.jetbrains.anko:anko:0.10.8'
     implementation 'org.apache.commons:commons-lang3:3.9'
     testImplementation 'junit:junit:4.12'
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"

library/src/main/java/com/stringcare/library/AssetByteArrayListener.kt

@@ -0,0 +1,5 @@
+package com.stringcare.library
+
+interface AssetByteArrayListener : AssetListener {
+    fun assetReady(byteArray: ByteArray)
+}

library/src/main/java/com/stringcare/library/AssetListener.kt

@@ -0,0 +1,3 @@
+package com.stringcare.library
+
+interface AssetListener

library/src/main/java/com/stringcare/library/CPlusLogic.kt

@@ -179,6 +179,20 @@ class CPlusLogic {
             return java.lang.String.format(Resources.getSystem().locale(), revealV3(context, id, androidTreatment), *formatArgs)
         }
 
+        /**
+         * Reveals the given ByteArray
+         * @param value
+         * @return String
+         */
+        @JvmStatic
+        fun revealByteArray(context: Context, value: ByteArray): ByteArray {
+            return try {
+                SC().jniRevealV3(context, getCertificateSHA1Fingerprint(context), value)
+            } catch (e: Exception) {
+                value
+            }
+        }
+
     }
 
 }

library/src/main/java/com/stringcare/library/JSONArrayListener.kt

@@ -0,0 +1,7 @@
+package com.stringcare.library
+
+import org.json.JSONArray
+
+interface JSONArrayListener : AssetListener {
+    fun assetReady(json: JSONArray)
+}

library/src/main/java/com/stringcare/library/JSONObjectListener.kt

@@ -0,0 +1,7 @@
+package com.stringcare.library
+
+import org.json.JSONObject
+
+interface JSONObjectListener : AssetListener {
+    fun assetReady(json: JSONObject)
+}

library/src/main/java/com/stringcare/library/SC.kt

@@ -3,6 +3,10 @@ package com.stringcare.library
 import android.content.Context
 import android.support.annotation.StringRes
 import android.util.Log
+import org.jetbrains.anko.doAsync
+import org.json.JSONArray
+import org.json.JSONObject
+import java.nio.charset.Charset
 
 /**
  * Created by efrainespada on 02/10/2016.
@@ -290,6 +294,84 @@ class SC {
             }
         }
 
+        private fun assetByteArray(path: String, predicate: () -> Boolean = { true }): ByteArray {
+            val inputStream = context.assets.openFd(path)
+            var bytes = inputStream.createInputStream().readBytes()
+            if (predicate()) {
+                bytes = CPlusLogic.revealByteArray(context, bytes)
+            }
+            return bytes
+        }
+
+        fun jsonObjectAsset(path: String, predicate: () -> Boolean): JSONObject {
+            val bytes = assetByteArray(path, predicate)
+            return JSONObject(String(bytes, Charset.forName("UTF-8")))
+        }
+
+        fun jsonObjectAssetAsync(path: String, json: (json: JSONObject) -> Unit, predicate: () -> Boolean) {
+            doAsync {
+                val j = jsonObjectAsset(path, predicate)
+                json(j)
+            }
+        }
+
+        fun jsonArrayAsset(path: String, predicate: () -> Boolean): JSONArray {
+            val bytes = assetByteArray(path, predicate)
+            return JSONArray(String(bytes, Charset.forName("UTF-8")))
+        }
+
+        fun jsonArrayAssetAsync(path: String, json: (json: JSONArray) -> Unit, predicate: () -> Boolean) {
+            doAsync {
+                val j = jsonArrayAsset(path, predicate)
+                json(j)
+            }
+        }
+
+        @JvmStatic
+        fun jsonObjectAsset(path: String): JSONObject {
+            return jsonObjectAsset(path) { true }
+        }
+
+        @JvmStatic
+        fun jsonObjectAsset(path: String, predicate: Boolean): JSONObject {
+            return jsonObjectAsset(path) { predicate }
+        }
+
+        @JvmStatic
+        fun jsonObjectAssetAsync(path: String, jsonObjectListener: JSONObjectListener) {
+            jsonObjectAssetAsync(path, jsonObjectListener, true)
+        }
+
+        @JvmStatic
+        fun jsonObjectAssetAsync(path: String, jsonObjectListener: JSONObjectListener, predicate: Boolean) {
+            jsonObjectAssetAsync(path, { file ->
+                jsonObjectListener.assetReady(file)
+            }) { predicate }
+        }
+
+
+        @JvmStatic
+        fun jsonArrayAsset(path: String): JSONArray {
+            return jsonArrayAsset(path) { true }
+        }
+
+        @JvmStatic
+        fun jsonArrayAsset(path: String, predicate: Boolean): JSONArray {
+            return jsonArrayAsset(path) { predicate }
+        }
+
+        @JvmStatic
+        fun jsonArrayAssetAsync(path: String, jsonArrayListener: JSONArrayListener) {
+            jsonArrayAssetAsync(path, jsonArrayListener, true)
+        }
+
+        @JvmStatic
+        fun jsonArrayAssetAsync(path: String, jsonArrayListener: JSONArrayListener, predicate: Boolean) {
+            jsonArrayAssetAsync(path, { file ->
+                jsonArrayListener.assetReady(file)
+            }) { predicate }
+        }
+
 
     }