netDB and certificates in internal storage

android/src/org/purplei2p/i2pd/Decompress.java

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+package org.purplei2p.i2pd;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+import android.content.Context;
+import android.util.Log;
+
+public class Decompress {
+    private static final int BUFFER_SIZE = 1024 * 10;
+    private static final String TAG = "Decompress";
+
+    public static void unzipFromAssets(Context context, String zipFile, String destination) {
+        try {
+            if (destination == null || destination.length() == 0)
+                destination = context.getFilesDir().getAbsolutePath();
+            InputStream stream = context.getAssets().open(zipFile);
+            unzip(stream, destination);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void unzip(String zipFile, String location) {
+        try {
+            FileInputStream fin = new FileInputStream(zipFile);
+            unzip(fin, location);
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    public static void unzip(InputStream stream, String destination) {
+        dirChecker(destination, "");
+        byte[] buffer = new byte[BUFFER_SIZE];
+        try {
+            ZipInputStream zin = new ZipInputStream(stream);
+            ZipEntry ze = null;
+
+            while ((ze = zin.getNextEntry()) != null) {
+                Log.v(TAG, "Unzipping " + ze.getName());
+
+                if (ze.isDirectory()) {
+                    dirChecker(destination, ze.getName());
+                } else {
+                    File f = new File(destination + ze.getName());
+                    if (!f.exists()) {
+                        FileOutputStream fout = new FileOutputStream(destination + ze.getName());
+                        int count;
+                        while ((count = zin.read(buffer)) != -1) {
+                            fout.write(buffer, 0, count);
+                        }
+                        zin.closeEntry();
+                        fout.close();
+                    }
+                }
+
+            }
+            zin.close();
+        } catch (Exception e) {
+            Log.e(TAG, "unzip", e);
+        }
+
+    }
+
+    private static void dirChecker(String destination, String dir) {
+        File f = new File(destination + dir);
+
+        if (!f.isDirectory()) {
+            boolean success = f.mkdirs();
+            if (!success) {
+                Log.w(TAG, "Failed to create folder " + f.getName());
+            }
+        }
+    }
+}