mirror of
https://github.com/M66B/FairEmail.git
synced 2025-02-23 06:31:17 +00:00
Refactoring
This commit is contained in:
M66B
parent
1f3deab967
commit
38902a5cd9
3 changed files with 330 additions and 267 deletions
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@ -5853,11 +5853,11 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
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Log.i("Opening uri=" + uri + " title=" + title);
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uri = Uri.parse(uri.toString().replaceAll("\\s+", ""));
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if (StyleHelper.isProtectedContent(uri)) {
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if (ProtectedContent.isProtectedContent(uri)) {
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Bundle args = new Bundle();
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args.putParcelable("uri", uri);
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FragmentDialogBase dialog = new StyleHelper.FragmentDialogDecrypt();
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FragmentDialogBase dialog = new ProtectedContent.FragmentDialogDecrypt();
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dialog.setArguments(args);
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dialog.show(parentFragment.getParentFragmentManager(), "decrypt");
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return true;
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321
app/src/main/java/eu/faircode/email/ProtectedContent.java
Normal file
321
app/src/main/java/eu/faircode/email/ProtectedContent.java
Normal file
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@ -0,0 +1,321 @@
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package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2022 by Marcel Bokhorst (M66B)
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*/
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import android.app.Dialog;
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import android.content.Context;
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import android.graphics.drawable.Drawable;
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import android.net.Uri;
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import android.os.Bundle;
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import android.text.Editable;
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import android.text.Spannable;
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import android.text.Spanned;
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import android.text.TextUtils;
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import android.text.TextWatcher;
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import android.text.method.ArrowKeyMovementMethod;
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import android.text.style.URLSpan;
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import android.util.Base64;
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import android.view.GestureDetector;
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import android.view.KeyEvent;
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import android.view.LayoutInflater;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.WindowManager;
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import android.view.inputmethod.EditorInfo;
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import android.widget.Button;
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import android.widget.TextView;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.appcompat.app.AlertDialog;
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import com.google.android.material.textfield.TextInputLayout;
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import org.jsoup.nodes.Element;
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import java.nio.ByteBuffer;
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import java.nio.charset.StandardCharsets;
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import java.security.InvalidAlgorithmParameterException;
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import java.security.InvalidKeyException;
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import java.security.NoSuchAlgorithmException;
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import java.security.SecureRandom;
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import java.security.spec.InvalidKeySpecException;
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import java.security.spec.KeySpec;
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import javax.crypto.BadPaddingException;
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import javax.crypto.Cipher;
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import javax.crypto.IllegalBlockSizeException;
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import javax.crypto.NoSuchPaddingException;
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import javax.crypto.SecretKey;
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import javax.crypto.SecretKeyFactory;
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import javax.crypto.spec.GCMParameterSpec;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.PBEKeySpec;
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public class ProtectedContent {
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static final int MAX_PROTECTED_TEXT = 1500;
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private static final int DECRYPT_ITERATIONS = 120000;
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private static final int DECRYPT_KEYLEN = 256;
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private static final String DECRYPT_DERIVATION = "PBKDF2WithHmacSHA512";
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private static final int DECRYPT_TAGLEN = 128;
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private static final String DECRYPT_TRANSFORMATION = "AES/GCM/NoPadding";
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private static final String DECRYPT_URL = "https://fairemail.net/decrypt/";
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static Uri toUri(Context context, String html, String password)
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throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidAlgorithmParameterException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
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if (html.length() > MAX_PROTECTED_TEXT)
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throw new IllegalArgumentException(context.getString(R.string.title_style_protect_size));
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SecureRandom random = new SecureRandom();
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byte[] salt = new byte[16]; // 128 bits
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random.nextBytes(salt);
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byte[] iv = new byte[12]; // 96 bites
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random.nextBytes(iv);
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// Iterations = 120,000; Keylength = 256 bits = 32 bytes
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PBEKeySpec spec = new PBEKeySpec(password.toCharArray(), salt, DECRYPT_ITERATIONS, DECRYPT_KEYLEN);
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SecretKeyFactory skf = SecretKeyFactory.getInstance(DECRYPT_DERIVATION);
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SecretKey key = skf.generateSecret(spec);
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// Authentication tag length = 128 bits = 16 bytes
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GCMParameterSpec parameterSpec = new GCMParameterSpec(DECRYPT_TAGLEN, iv);
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final Cipher cipher = Cipher.getInstance(DECRYPT_TRANSFORMATION);
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cipher.init(Cipher.ENCRYPT_MODE, key, parameterSpec);
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byte[] cipherText = cipher.doFinal(html.getBytes(StandardCharsets.UTF_8));
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ByteBuffer out = ByteBuffer.allocate(1 + salt.length + iv.length + cipherText.length);
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out.put((byte) 1); // version
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out.put(salt);
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out.put(iv);
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out.put(cipherText);
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String fragment = Base64.encodeToString(out.array(), Base64.URL_SAFE | Base64.NO_WRAP);
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return Uri.parse(DECRYPT_URL + "#" + fragment);
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}
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static String fromUri(Context context, Uri uri, String password) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidAlgorithmParameterException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException {
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byte[] msg = Base64.decode(uri.getFragment(), Base64.URL_SAFE | Base64.NO_WRAP);
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int version = msg[0];
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if (version > 1)
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throw new IllegalArgumentException("Please update the app");
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byte[] salt = new byte[16]; // 128 bits
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System.arraycopy(msg, 1, salt, 0, salt.length);
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byte[] iv = new byte[12]; // 96 bites
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System.arraycopy(msg, 1 + salt.length, iv, 0, iv.length);
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byte[] encrypted = new byte[msg.length - 1 - salt.length - iv.length];
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System.arraycopy(msg, 1 + salt.length + iv.length, encrypted, 0, encrypted.length);
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SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DECRYPT_DERIVATION);
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KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, DECRYPT_ITERATIONS, DECRYPT_KEYLEN);
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SecretKey secret = keyFactory.generateSecret(keySpec);
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Cipher cipher = Cipher.getInstance(DECRYPT_TRANSFORMATION);
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IvParameterSpec ivSpec = new IvParameterSpec(iv);
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cipher.init(Cipher.DECRYPT_MODE, secret, ivSpec);
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byte[] decrypted = cipher.doFinal(encrypted);
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return new String(decrypted, StandardCharsets.UTF_8);
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}
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static boolean isProtectedContent(Uri uri) {
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return uri.toString().startsWith(DECRYPT_URL);
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}
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public static final class FragmentDialogDecrypt extends FragmentDialogBase {
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@NonNull
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@Override
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public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
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Bundle args = getArguments();
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final Context context = getContext();
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final View view = LayoutInflater.from(context).inflate(R.layout.dialog_decrypt, null);
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final TextInputLayout tilPassword = view.findViewById(R.id.tilPassword);
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final Button btnDecrypt = view.findViewById(R.id.btnDecrypt);
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final TextView tvContent = view.findViewById(R.id.tvContent);
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final TextView tvError = view.findViewById(R.id.tvError);
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final TextView tvErrorDetail = view.findViewById(R.id.tvErrorDetail);
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tilPassword.setVisibility(View.VISIBLE);
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btnDecrypt.setVisibility(View.VISIBLE);
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tvContent.setVisibility(View.GONE);
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tvError.setVisibility(View.GONE);
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tvErrorDetail.setVisibility(View.GONE);
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String password = args.getString("password");
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tilPassword.getEditText().setText(password);
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btnDecrypt.setEnabled(!TextUtils.isEmpty(password));
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tilPassword.getEditText().addTextChangedListener(new TextWatcher() {
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@Override
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public void beforeTextChanged(CharSequence s, int start, int count, int after) {
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// Do nothing
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}
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@Override
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public void onTextChanged(CharSequence s, int start, int before, int count) {
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// Do nothing
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}
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@Override
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public void afterTextChanged(Editable s) {
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String password = s.toString();
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btnDecrypt.setEnabled(!TextUtils.isEmpty(password));
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args.putString("password", password);
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}
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});
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btnDecrypt.setEnabled(false);
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tvContent.setMovementMethod(new ArrowKeyMovementMethod() {
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private GestureDetector gestureDetector = new GestureDetector(context,
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new GestureDetector.SimpleOnGestureListener() {
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@Override
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public boolean onSingleTapUp(MotionEvent event) {
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return onClick(event);
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}
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private boolean onClick(MotionEvent event) {
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Spannable buffer = (Spannable) tvContent.getText();
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int off = Helper.getOffset(tvContent, buffer, event);
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URLSpan[] link = buffer.getSpans(off, off, URLSpan.class);
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if (link.length > 0) {
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String url = link[0].getURL();
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Uri uri = Uri.parse(url);
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int start = buffer.getSpanStart(link[0]);
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int end = buffer.getSpanEnd(link[0]);
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String title = (start < 0 || end < 0 || end <= start
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? null : buffer.subSequence(start, end).toString());
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if (url.equals(title))
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title = null;
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Bundle args = new Bundle();
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args.putParcelable("uri", uri);
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args.putString("title", title);
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FragmentDialogOpenLink fragment = new FragmentDialogOpenLink();
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fragment.setArguments(args);
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fragment.show(getParentFragmentManager(), "open:link");
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return true;
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}
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return false;
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}
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});
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@Override
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public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
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return gestureDetector.onTouchEvent(event);
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}
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});
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btnDecrypt.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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new SimpleTask<Spanned>() {
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@Override
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protected void onPreExecute(Bundle args) {
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tilPassword.setEnabled(false);
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btnDecrypt.setEnabled(false);
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tvError.setVisibility(View.GONE);
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tvErrorDetail.setVisibility(View.GONE);
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}
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@Override
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protected void onPostExecute(Bundle args) {
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tilPassword.setEnabled(true);
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btnDecrypt.setEnabled(true);
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}
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@Override
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protected Spanned onExecute(Context context, Bundle args) throws Throwable {
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Uri uri = args.getParcelable("uri");
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String password = args.getString("password");
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String html = ProtectedContent.fromUri(context, uri, password);
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return HtmlHelper.fromHtml(html, new HtmlHelper.ImageGetterEx() {
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@Override
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public Drawable getDrawable(Element element) {
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return ImageHelper.decodeImage(context,
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-1, element, true, 0, 1.0f, tvContent);
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}
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}, null, context);
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}
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@Override
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protected void onExecuted(Bundle args, Spanned content) {
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tilPassword.setVisibility(View.GONE);
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btnDecrypt.setVisibility(View.GONE);
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tvContent.setText(content);
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tvContent.setVisibility(View.VISIBLE);
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}
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@Override
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protected void onException(Bundle args, Throwable ex) {
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tvError.setText(ex.getMessage());
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tvErrorDetail.setText(ex.toString());
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tvError.setVisibility(View.VISIBLE);
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tvErrorDetail.setVisibility(View.VISIBLE);
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}
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}.execute(FragmentDialogDecrypt.this, args, "decypt");
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}
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});
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tilPassword.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
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@Override
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public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
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if (actionId == EditorInfo.IME_ACTION_DONE) {
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btnDecrypt.performClick();
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return true;
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} else
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return false;
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}
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});
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if (!TextUtils.isEmpty(password))
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btnDecrypt.post(new Runnable() {
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@Override
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public void run() {
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btnDecrypt.performClick();
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}
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});
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Dialog dialog = new AlertDialog.Builder(context)
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.setView(view)
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.setNegativeButton(android.R.string.cancel, null)
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.create();
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dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
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return dialog;
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}
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}
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}
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@ -19,7 +19,6 @@ package eu.faircode.email;
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Copyright 2018-2022 by Marcel Bokhorst (M66B)
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*/
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import android.app.Dialog;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.Intent;
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@ -41,7 +40,6 @@ import android.text.Spanned;
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import android.text.TextPaint;
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import android.text.TextUtils;
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import android.text.TextWatcher;
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import android.text.method.ArrowKeyMovementMethod;
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import android.text.style.AlignmentSpan;
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import android.text.style.BackgroundColorSpan;
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import android.text.style.BulletSpan;
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@ -57,22 +55,17 @@ import android.text.style.URLSpan;
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import android.text.style.UnderlineSpan;
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import android.util.Base64;
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import android.util.Pair;
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import android.view.GestureDetector;
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import android.view.KeyEvent;
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import android.view.LayoutInflater;
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import android.view.MenuItem;
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import android.view.MotionEvent;
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import android.view.SubMenu;
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import android.view.View;
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import android.view.WindowManager;
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import android.view.inputmethod.EditorInfo;
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import android.widget.Button;
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import android.widget.EditText;
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import android.widget.TextView;
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import android.widget.Toast;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.appcompat.app.AlertDialog;
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import androidx.appcompat.widget.PopupMenu;
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import androidx.core.content.ContextCompat;
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@ -89,32 +82,13 @@ import org.jsoup.nodes.Document;
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import org.jsoup.nodes.Element;
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import java.io.ByteArrayOutputStream;
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import java.nio.ByteBuffer;
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import java.nio.charset.StandardCharsets;
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import java.security.SecureRandom;
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import java.security.spec.KeySpec;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.Locale;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import javax.crypto.SecretKeyFactory;
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import javax.crypto.spec.GCMParameterSpec;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.PBEKeySpec;
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public class StyleHelper {
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private static final int MAX_PROTECTED_TEXT = 1500;
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private static final int DECRYPT_ITERATIONS = 120000;
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private static final int DECRYPT_KEYLEN = 256;
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private static final String DECRYPT_DERIVATION = "PBKDF2WithHmacSHA512";
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private static final int DECRYPT_TAGLEN = 128;
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private static final String DECRYPT_TRANSFORMATION = "AES/GCM/NoPadding";
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private static final String DECRYPT_URL = "https://fairemail.net/decrypt/";
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private static final List<Class<?>> CLEAR_STYLES = Collections.unmodifiableList(Arrays.asList(
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StyleSpan.class,
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UnderlineSpan.class,
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@ -598,11 +572,11 @@ public class StyleHelper {
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}
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boolean toolong = false;
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if (end - start > MAX_PROTECTED_TEXT) {
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if (end - start > ProtectedContent.MAX_PROTECTED_TEXT) {
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toolong = true;
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} else {
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String html = getProtectedContent((Spanned) edit.subSequence(start, end));
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if (html.length() > MAX_PROTECTED_TEXT)
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if (html.length() > ProtectedContent.MAX_PROTECTED_TEXT)
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toolong = true;
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}
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if (toolong) {
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@ -637,52 +611,18 @@ public class StyleHelper {
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args.putInt("start", start);
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args.putInt("end", end);
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new SimpleTask<String>() {
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new SimpleTask<Uri>() {
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@Override
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protected String onExecute(Context context, Bundle args) throws Throwable {
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protected Uri onExecute(Context context, Bundle args) throws Throwable {
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Spanned text = (Spanned) args.getCharSequence("text");
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String password = args.getString("password");
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String html = getProtectedContent(text);
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if (html.length() > MAX_PROTECTED_TEXT)
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throw new IllegalArgumentException(context.getString(R.string.title_style_protect_size));
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SecureRandom random = new SecureRandom();
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byte[] salt = new byte[16]; // 128 bits
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random.nextBytes(salt);
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byte[] iv = new byte[12]; // 96 bites
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random.nextBytes(iv);
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// Iterations = 120,000; Keylength = 256 bits = 32 bytes
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PBEKeySpec spec = new PBEKeySpec(password.toCharArray(), salt, DECRYPT_ITERATIONS, DECRYPT_KEYLEN);
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SecretKeyFactory skf = SecretKeyFactory.getInstance(DECRYPT_DERIVATION);
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SecretKey key = skf.generateSecret(spec);
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// Authentication tag length = 128 bits = 16 bytes
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GCMParameterSpec parameterSpec = new GCMParameterSpec(DECRYPT_TAGLEN, iv);
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final Cipher cipher = Cipher.getInstance(DECRYPT_TRANSFORMATION);
|
||||
cipher.init(Cipher.ENCRYPT_MODE, key, parameterSpec);
|
||||
|
||||
byte[] cipherText = cipher.doFinal(html.getBytes(StandardCharsets.UTF_8));
|
||||
|
||||
ByteBuffer out = ByteBuffer.allocate(1 + salt.length + iv.length + cipherText.length);
|
||||
out.put((byte) 1); // version
|
||||
out.put(salt);
|
||||
out.put(iv);
|
||||
out.put(cipherText);
|
||||
|
||||
String fragment = Base64.encodeToString(out.array(), Base64.URL_SAFE | Base64.NO_WRAP);
|
||||
String url = DECRYPT_URL + "#" + fragment;
|
||||
|
||||
return url;
|
||||
return ProtectedContent.toUri(context, html, password);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onExecuted(Bundle args, String url) {
|
||||
protected void onExecuted(Bundle args, Uri uri) {
|
||||
if (etBody.getSelectionStart() != start ||
|
||||
etBody.getSelectionEnd() != end)
|
||||
return;
|
||||
|
|
@ -690,7 +630,7 @@ public class StyleHelper {
|
|||
String title = context.getString(R.string.title_decrypt);
|
||||
edit.delete(start, end);
|
||||
edit.insert(start, title);
|
||||
edit.setSpan(new URLSpan(url), start, start + title.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
|
||||
edit.setSpan(new URLSpan(uri.toString()), start, start + title.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
|
||||
etBody.setSelection(start + title.length());
|
||||
}
|
||||
|
||||
|
|
@ -1478,203 +1418,5 @@ public class StyleHelper {
|
|||
}
|
||||
}
|
||||
|
||||
public static boolean isProtectedContent(Uri uri) {
|
||||
return uri.toString().startsWith(DECRYPT_URL);
|
||||
}
|
||||
|
||||
public static final class FragmentDialogDecrypt extends FragmentDialogBase {
|
||||
@NonNull
|
||||
@Override
|
||||
public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
|
||||
Bundle args = getArguments();
|
||||
|
||||
final Context context = getContext();
|
||||
final View view = LayoutInflater.from(context).inflate(R.layout.dialog_decrypt, null);
|
||||
final TextInputLayout tilPassword = view.findViewById(R.id.tilPassword);
|
||||
final Button btnDecrypt = view.findViewById(R.id.btnDecrypt);
|
||||
final TextView tvContent = view.findViewById(R.id.tvContent);
|
||||
final TextView tvError = view.findViewById(R.id.tvError);
|
||||
final TextView tvErrorDetail = view.findViewById(R.id.tvErrorDetail);
|
||||
|
||||
tilPassword.setVisibility(View.VISIBLE);
|
||||
btnDecrypt.setVisibility(View.VISIBLE);
|
||||
tvContent.setVisibility(View.GONE);
|
||||
tvError.setVisibility(View.GONE);
|
||||
tvErrorDetail.setVisibility(View.GONE);
|
||||
|
||||
String password = args.getString("password");
|
||||
tilPassword.getEditText().setText(password);
|
||||
btnDecrypt.setEnabled(!TextUtils.isEmpty(password));
|
||||
|
||||
tilPassword.getEditText().addTextChangedListener(new TextWatcher() {
|
||||
@Override
|
||||
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
|
||||
// Do nothing
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onTextChanged(CharSequence s, int start, int before, int count) {
|
||||
// Do nothing
|
||||
}
|
||||
|
||||
@Override
|
||||
public void afterTextChanged(Editable s) {
|
||||
String password = s.toString();
|
||||
btnDecrypt.setEnabled(!TextUtils.isEmpty(password));
|
||||
args.putString("password", password);
|
||||
}
|
||||
});
|
||||
|
||||
btnDecrypt.setEnabled(false);
|
||||
|
||||
tvContent.setMovementMethod(new ArrowKeyMovementMethod() {
|
||||
private GestureDetector gestureDetector = new GestureDetector(context,
|
||||
new GestureDetector.SimpleOnGestureListener() {
|
||||
@Override
|
||||
public boolean onSingleTapUp(MotionEvent event) {
|
||||
return onClick(event);
|
||||
}
|
||||
|
||||
private boolean onClick(MotionEvent event) {
|
||||
Spannable buffer = (Spannable) tvContent.getText();
|
||||
int off = Helper.getOffset(tvContent, buffer, event);
|
||||
|
||||
URLSpan[] link = buffer.getSpans(off, off, URLSpan.class);
|
||||
if (link.length > 0) {
|
||||
String url = link[0].getURL();
|
||||
Uri uri = Uri.parse(url);
|
||||
|
||||
int start = buffer.getSpanStart(link[0]);
|
||||
int end = buffer.getSpanEnd(link[0]);
|
||||
String title = (start < 0 || end < 0 || end <= start
|
||||
? null : buffer.subSequence(start, end).toString());
|
||||
if (url.equals(title))
|
||||
title = null;
|
||||
|
||||
Bundle args = new Bundle();
|
||||
args.putParcelable("uri", uri);
|
||||
args.putString("title", title);
|
||||
|
||||
FragmentDialogOpenLink fragment = new FragmentDialogOpenLink();
|
||||
fragment.setArguments(args);
|
||||
fragment.show(getParentFragmentManager(), "open:link");
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
});
|
||||
|
||||
@Override
|
||||
public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
|
||||
return gestureDetector.onTouchEvent(event);
|
||||
}
|
||||
});
|
||||
|
||||
btnDecrypt.setOnClickListener(new View.OnClickListener() {
|
||||
@Override
|
||||
public void onClick(View v) {
|
||||
new SimpleTask<Spanned>() {
|
||||
@Override
|
||||
protected void onPreExecute(Bundle args) {
|
||||
tilPassword.setEnabled(false);
|
||||
btnDecrypt.setEnabled(false);
|
||||
tvError.setVisibility(View.GONE);
|
||||
tvErrorDetail.setVisibility(View.GONE);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onPostExecute(Bundle args) {
|
||||
tilPassword.setEnabled(true);
|
||||
btnDecrypt.setEnabled(true);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected Spanned onExecute(Context context, Bundle args) throws Throwable {
|
||||
Uri uri = args.getParcelable("uri");
|
||||
String password = args.getString("password");
|
||||
|
||||
byte[] msg = Base64.decode(uri.getFragment(), Base64.URL_SAFE | Base64.NO_WRAP);
|
||||
|
||||
int version = msg[0];
|
||||
|
||||
byte[] salt = new byte[16]; // 128 bits
|
||||
System.arraycopy(msg, 1, salt, 0, salt.length);
|
||||
|
||||
byte[] iv = new byte[12]; // 96 bites
|
||||
System.arraycopy(msg, 1 + salt.length, iv, 0, iv.length);
|
||||
|
||||
byte[] encrypted = new byte[msg.length - 1 - salt.length - iv.length];
|
||||
System.arraycopy(msg, 1 + salt.length + iv.length, encrypted, 0, encrypted.length);
|
||||
|
||||
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DECRYPT_DERIVATION);
|
||||
KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, DECRYPT_ITERATIONS, DECRYPT_KEYLEN);
|
||||
SecretKey secret = keyFactory.generateSecret(keySpec);
|
||||
Cipher cipher = Cipher.getInstance(DECRYPT_TRANSFORMATION);
|
||||
IvParameterSpec ivSpec = new IvParameterSpec(iv);
|
||||
cipher.init(Cipher.DECRYPT_MODE, secret, ivSpec);
|
||||
byte[] decrypted = cipher.doFinal(encrypted);
|
||||
|
||||
String html = new String(decrypted, StandardCharsets.UTF_8);
|
||||
|
||||
return HtmlHelper.fromHtml(html, new HtmlHelper.ImageGetterEx() {
|
||||
@Override
|
||||
public Drawable getDrawable(Element element) {
|
||||
return ImageHelper.decodeImage(context,
|
||||
-1, element, true, 0, 1.0f, tvContent);
|
||||
}
|
||||
}, null, context);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onExecuted(Bundle args, Spanned content) {
|
||||
tilPassword.setVisibility(View.GONE);
|
||||
btnDecrypt.setVisibility(View.GONE);
|
||||
tvContent.setText(content);
|
||||
tvContent.setVisibility(View.VISIBLE);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onException(Bundle args, Throwable ex) {
|
||||
tvError.setText(ex.getMessage());
|
||||
tvErrorDetail.setText(ex.toString());
|
||||
tvError.setVisibility(View.VISIBLE);
|
||||
tvErrorDetail.setVisibility(View.VISIBLE);
|
||||
}
|
||||
}.execute(FragmentDialogDecrypt.this, args, "decypt");
|
||||
}
|
||||
});
|
||||
|
||||
tilPassword.getEditText().setOnEditorActionListener(new TextView.OnEditorActionListener() {
|
||||
@Override
|
||||
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
|
||||
if (actionId == EditorInfo.IME_ACTION_DONE) {
|
||||
btnDecrypt.performClick();
|
||||
return true;
|
||||
} else
|
||||
return false;
|
||||
}
|
||||
});
|
||||
|
||||
if (!TextUtils.isEmpty(password))
|
||||
btnDecrypt.post(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
btnDecrypt.performClick();
|
||||
}
|
||||
});
|
||||
|
||||
Dialog dialog = new AlertDialog.Builder(context)
|
||||
.setView(view)
|
||||
.setNegativeButton(android.R.string.cancel, null)
|
||||
.create();
|
||||
|
||||
dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
|
||||
|
||||
return dialog;
|
||||
}
|
||||
}
|
||||
|
||||
//TextUtils.dumpSpans(text, new LogPrinter(android.util.Log.INFO, "FairEmail"), "afterTextChanged ");
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue