AndroidAppsProcessor

AndroidAppsProcessor 🤖

AndroidAppsProcessor is an abstract class that defines the structure and flow of an Android application processing framework. It includes functionality to fetch Android application's SHA256 from a Redis instance, download the corresponding APK file using the AndroZoo service, process the APK file, and then remove the APK file.

🌟 Super useful for experiments on Android apps! 🌟

Table of Contents

• Overview
• Abstract Methods
• Main Processing Method
• Constructor
• Examples

Overview

AndroidAppsProcessor serves as the base for creating Android application analysis, testing, or data extraction frameworks.

Abstract Methods

processApp(String appName)

Processes the Android application with the given name (APK file path). Implementation required.

processResults()

Processes the results of the processApp method. Implementation required.

Certainly! I've revised the relevant section to provide a more detailed explanation of the infinite loop that fetches a SHA256 from a Redis server and utilizes the SHA to download an app with AndroZooUtils.

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Main Processing Method

run()

Begins the process of continuously fetching, processing, and deleting Android apps. It operates as follows:

1. Infinite Loop: The method runs in an infinite loop, suitable for continuous operation as a background service.

2. Fetching SHA256 from Redis: Within the loop, the method attempts to retrieve the SHA256 of an Android app from a Redis manager using the specified redisRoot key. If no SHA256 is found, the method waits for 30 seconds before trying again.

3. Downloading APK: Once a SHA256 is received, the method uses the AndroZooUtils instance to download the corresponding APK file for the Android app.

4. Processing and Deletion: The downloaded APK is then processed by invoking the processApp method (which must be implemented in a subclass), and the APK file is deleted afterward.

5. Handling Timeouts and Errors: Each app's processing is performed in its own thread with a specified timeout. If processing takes longer, it is canceled, and any exceptions are logged.

Example:

public void run() {
    String redisSpop = String.format("%s:pop", this.redisRoot);
    String redisSuccess = String.format("%s:success", this.redisRoot);

    try {
        while (true) {
            String sha = rm.spop(redisSpop);
            if (sha == null) {
                // No SHA received, wait and continue
                Thread.sleep(30000);
                continue;
            }
            String apkPath = this.au.getApk(sha);
            // Process the app and handle the result
            // ...
        }
    } catch (Exception e) {
        // Handle exceptions
    }
}

This mechanism ensures that the AndroidAppsProcessor class can efficiently and continually process new Android apps as they become available through the Redis database and AndroZoo service.

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I hope this updated section clarifies the infinite loop process within the AndroidAppsProcessor class. Let me know if further details are needed!

Constructor

public AndroidAppsProcessor(RedisManager rm, AndroZooUtils au, String redisRoot, int timeout)

Constructs a new AndroidAppsProcessor instance with the specified parameters.

Examples

Example 1: Custom Implementation

public class MyProcessor extends AndroidAppsProcessor {
    @Override
    protected void processApp(String appName) {
        // Custom code here for app processing
    }

    @Override
    protected void processResults() {
        // Custom code here for result processing
    }
}

RedisManager rm = new RedisManager();
AndroZooUtils au = new AndroZooUtils();
MyProcessor processor = new MyProcessor(rm, au, "redisRootKey", 10);
processor.run();

These examples showcase how to extend the AndroidAppsProcessor to create customized Android application processing behavior.