要捕获使用TLS的安卓应用程序的数据包,可以使用以下步骤和代码示例:
import android.util.Log;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
public class PacketCapture {
private static final String TAG = "PacketCapture";
public static void startCapture() {
try {
Process process = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(process.getOutputStream());
os.writeBytes("tcpdump -i any -p -s 0 -w /sdcard/capture.pcap\n");
os.flush();
} catch (IOException e) {
Log.e(TAG, "Error starting packet capture: " + e.getMessage());
}
}
public static void stopCapture() {
try {
Process process = Runtime.getRuntime().exec("su");
DataOutputStream os = new DataOutputStream(process.getOutputStream());
os.writeBytes("pkill tcpdump\n");
os.flush();
} catch (IOException e) {
Log.e(TAG, "Error stopping packet capture: " + e.getMessage());
}
}
public static void saveCapture(String filePath) {
try {
File sourceFile = new File("/sdcard/capture.pcap");
File destFile = new File(filePath);
sourceFile.renameTo(destFile);
} catch (Exception e) {
Log.e(TAG, "Error saving packet capture: " + e.getMessage());
}
}
}
PacketCapture.startCapture();
PacketCapture.stopCapture();
PacketCapture.saveCapture("/sdcard/captured.pcap");
请注意,这种方法需要设备具有root权限才能执行命令。还要确保设备上已安装tcpdump或类似的抓包工具。